This is a list of people with peerages of the United Kingdom created under the Life Peerages Act 1958 and Lords of Appeal in Ordinary (whose life peerages are created under the Appellate Jurisdiction Act 1876) who are closely related to one another, either by blood up to the degree of third cousins, or by marriage or cohabitation. This list is ordered by the antiquity of the earliest title each family has.
Those related by blood and marriage The Barons Russell of Killowen, Romer and Maugham The title Baron Russell of Killowen was created three times for father, son and grandson, all of them appointed to be Lords of Appeal in Ordinary. In 1900, the second baron married Mary Emily Ritchie, a daughter of the first (hereditary) Baron Ritchie of Dundee, of Welders, in the parish of Chalfont St. Giles, in the county of Buckingham (1905). The titles are Baron Russell of Killowen, in the county of Down (1894); Baron Russell of Killowen of Killowen in the County of Down (1929); and Baron Russell of Killowen, of Killowen in the County of Down (1975). Frederick Maugham (1866–1958) and Mark Romer (1866–1944) were also high-ranking judges appointed to be Lords of Appeal in Ordinary, the former in 1935 and the latter in 1938. Maugham married Romer's sister, Helen Mary in 1896. He was later appointed Lord High Chancellor of Great Britain in 1938 and elevated to be Viscount Maugham, of Hartfield in the County of Sussex in 1939 on his retirement, as was customary. Romer married Anne Wilmot Ritchie, an elder daughter of the aforementioned first Baron Ritchie of Dundee. Their life peerages are Baron Maugham of Hartfield in the County of Sussex (1935); and Baron Romer of New Romney in the County of Kent (1938)
Asquith/Bonham Carter Aside from the hereditary Earldom of Oxford and Asquith, and Viscountcy Asquith, of Morley in the West Riding of the County of York, members of the Asquith, Bonham Carter and related families have been ennobled with the following life peerages: Baron Asquith of Bishopstone, of Bishopstone in the County of Sussex (1951, Law Lord); Baroness Elliot of Harwood, of Rulewater in the County of Roxburgh (1958, Conservative); Baroness Asquith of Yarnbury, of Yarnbury in the County of Wiltshire (1964, Liberal); Baron Grimond, of Firth in the County of Orkney (1983, Liberal); Baron Bonham-Carter, of Yarnbury in the County of Wiltshire (1986, Liberal Democrat); Baron Razzall, of Mortlake in the London Borough of Richmond (1997, Liberal Democrat); and Baroness Bonham-Carter of Yarnbury, of Yarnbury in the County of Wiltshire (2004, Liberal Democrat). Lord Grimond and The Hon. Laura Bonham Carter married in 1938. Lord Razzall and The Baroness Bonham-Carter of Yarnbury became partners in 2008.
Sir Charles Clow Tennant, 1st Baronet (1823–1906) Emma Margaret Asquith, Countess of Oxford and Asquith née Tennant (1864–1945) = Herbert Henry Asquith, 1st Earl of Oxford and Asquith (1852–1928) Katharine Elliot, Baroness Elliot of Harwood née Tennant (1903–1994) Herbert Henry Asquith, 1st Earl of Oxford and Asquith (1852–1928) Raymond Herbert Asquith (1878–1916) Edward Julian George Asquith, 2nd Earl of Oxford and Asquith (1916–2011) Raymond Benedict Bartholomew Michael Asquith, 3rd Earl of Oxford and Asquith (b. 1952) Representative peer in the House of Lords from 2014, replacing Lord Methuen. Mark Julian Asquith, Viscount Asquith (b. 1979) Helen Violet Bonham Carter, Baroness Asquith of Yarnbury née Violet Asquith (1887–1969) Laura Grimond, Lady Grimond née Bonham Carter (1918–1994) = Joseph Grimond, Baron Grimond (1913–1993) Mark Raymond Bonham Carter, Baron Bonham-Carter(1922–1994) Jane Mary Bonham Carter, Baroness Bonham-Carter of Yarnbury (b. 1957) ~ Edward Timothy Razzall, Baron Razzall (b. 1943) Cyril Asquith, Baron Asquith of Bishopstone (1890–1954)
Cohen Lionel Leonard Cohen was made a Law Lord in 1951. Janet Neel married James Lionel Cohen, Lionel's first cousin, in 1971. Janet was ennobled in 2000 after being Governor of the BBC. Their titles are Baron Cohen of Walmer in the County of Kent (1951, Law Lord) and Baroness Cohen of Pimlico, of Pimlico in the City of Westminster (2000, Labour)
Lionel Louis Cohen (1832–1887) Sir Leonard Lionel Cohen (1858–1938) Lionel Leonard Cohen, Baron Cohen (1888–1973) Frank Lionel Cohen (1865–1955) Richard Henry Lionel Cohen (1907–1998) James Lionel Cohen (b. 1942) = Janet Neel, Baroness Cohen of Pimlico (b. 1940)
Shackleton/Salmon Baron Shackleton, of Burley in the County of Southampton (1958, Labour) Baron Salmon, of Sandwich in the County of Kent (1972, Law Lord) Baron Lawson of Blaby, of Newnham in the County of Northamptonshire (1992, Conservative) Baroness Shackleton of Belgravia, of Belgravia in the City of Westminster (2010, Conservative) Baroness Monckton of Dallington Forest, of Earlsdown in the County of East Sussex (2024, Conservative) ^Nigel Lawson married Vanessa Salmon in 1955. They divorced in 1980. His son Hon. Dominic married Baroness Monckton of Dallington Forest in 1991. She is a daughter of the second Viscount Monckton of Brenchley.
Shawcross, Forte, Wolfson and Rawlings
The titles held by members of the Wolfson and Shawcross families, and their relations, are Baron Shawcross, of Friston in the County of Sussex (1959); Baron Forte, of Ripley in the county of Surrey (1982); Baron Wolfson, of Marylebone in the City of Westminster (1985); Baron Wolfson of Sunningdale, of Trevose in the County of Cornwall (1991); Baroness Rawlings, of Burnham Westgate in the County of Norfolk (1994); Baron Wolfson of Aspley Guise, of Aspley Guise in the County of Bedfordshire (2010); and Baroness Shawcross-Wolfson, of Aspley Guise in the County of Bedfordshire (2025).
Baron Wolfson of Sunningdale and The Baroness Rawlings were married in 1962. Their marriage was dissolved in 1967. Baron Wolfson of Aspley Guise is the child of Baron Wolfson of Sunningdale's second marriage to Susan Davis. Sir William Shawcross married the hon. Olga Polizzi as his third wife in 1993. Baroness Shawcross-Wolfson is the child of Sir William's second marriage to Michal Levin. Baron Wolfson of Aspley Guise and Baroness Shawcross-Wolfson married in 2012.
Sainsbury/Havers/Butler-Sloss The titles held by members of the grocer Sainsbury family are Baron Sainsbury, of Drury Lane in the Borough of Holborn (1962, Labour); Baron Sainsbury of Preston Candover, of Preston Candover in the County of Hampshire (1989, Conservative); and Baron Sainsbury of Turville, of Turville in the County of Buckinghamshire (1990, Labour). Michael Havers was made a life peer upon being appointed to the role of Lord Chancellor under Margaret Thatcher. His sister, Elizabeth Butler-Sloss, was later made a life peer upon recommendation by the House of Lords Appointments Commission. She was the first female Lord Justice of Appeal and the first female President of the Family Division of the High Court. She also chaired part of the inquests into the death of Diana, Princess of Wales and Dodi Fayed. The titles are Baron Havers, of St. Edmundsbury in the County of Suffolk (1987, Conservative) and Baroness Butler-Sloss, of Marsh Green in the County of Devon (2006, Crossbench).
Gaitskell and Wasserman Latvian-born Anna Dora Creditor (1901–1989) was a life-long Labour Party member. In 1937, after divorcing her first husband, she married Hugh Gaitskell, who went on to become Minister for Fuel and Power, Chancellor of the Exchequer, and leader of the Labour Party from 1955 until his sudden death in 1963. After being widowed, Dora Gaitskell was ennobled with a life peerage. She remained in the Labour Party during the high-profile defections to the newly created Social Democratic Party. Her younger daughter, Hon. Cresidda Gaitskell (b. 1942), married Canada-born Gordon Joshua Wasserman in 1964. After a career as a civil servant in the Home Office, and as a consultant in the private sector specialising in policing, he too was ennobled in 2011. The titles are Baroness Gaitskell, of Egremont in the County of Cumberland (1964, Labour), and Baron Wasserman, of Pimlico in the City of Westminster (2011, Conservative).
Anna Dora Gaitskell, Baroness Gaitskell née Creditor (1901–1989) Cressida Wasserman, Lady Wasserman née Gaitskell (b. 1942) = Gordon Joshua Wasserman, Baron Wasserman (b. 1938)
Hurd/Cowdrey/Kerr/Cameron Four generations of the Hurd family have sat as Conservative MPs. The two middle generations have been given life peerages (Lord Hurd of Westwell notably serving as Foreign Secretary under Margaret Thatcher and John Major), and the youngest married the daughter of The Most Hon. the Marquess of Lothian and The Rt. Hon. the Lady Herries of Terregles in 2010. Lord Lothian also sat as a Conservative MP, and was given a life peerage upon retirement from the Commons. Despite already succeeding to his titles, he did so after the House of Lords Act 1999 removed the automatic right of hereditary peers to sit in the Lords, and so required a life peerage to be able to sit there. Lord Lothian married the 16th Lady Herries of Terregles in 1975. Her elder sister, the 14th Lady, married the cricketer Colin Cowdrey in 1985. Cowdrey was given a life peerage by outgoing Prime Minister John Major in 1997. Lord Lothian's sister Lady Cecil married the 27th Lochiel (Chief of Clan Cameron), and their son the 28th Lochiel was ennobled in 2024 upon being made Under-Secretary for Scotland and after serving as an MSP for the Highlands and Islands. The 28th Lochiel's first cousin once removed was already ennobled twenty years prior. The life peerages are Baron Hurd, of Newbury in the Royal County of Berkshire (1964); Baron Hurd of Westwell, of Westwell in the county of Oxfordshire (1997); Baron Cowdrey of Tonbridge, of Tonbridge in the county of Kent (1997); Baron Cameron of Dillington, of Dillington in the county of Somerset (2004); Baron Kerr of Monteviot, of Monteviot in Roxburghshire (2010); and Baron Cameron of Lochiel, of Achnacarry in the County of Inverness (2024)
Brooke Both Barbara and her husband Henry Brooke were given life peerages, as was their son, Peter. The titles are:
Baroness Brooke of Ystradfellte, of Ystradfellte in the County of Breconshire (1964) Baron Brooke of Cumnor, of Cumnor in the Royal County of Berkshire (1966) Baron Brooke of Sutton Mandeville, of Sutton Mandeville in the County of Wiltshire (2001)
Henry Brooke, Baron Brooke of Cumnor (1903–1984) = Barbara Muriel Brooke, Baroness Brooke of Ystradfellte née Mathews (1908–2000) Peter Leonard Brooke, Baron Brooke of Sutton Mandeville (1934–2023)
Spencer-Churchill/Soames/Sandys Clementine Churchill, wife of Prime Minister Winston Churchill, was created a life peer after her husband's death. One of their daughters, Diana, married Duncan Sandys in 1935 and they divorced in 1960 before he was made a life peer. Another daughter, Mary, married Christopher Soames in 1947, who was later ennobled in like manner. Their son, Nicholas, was also ennobled. The titles are:
Baroness Spencer-Churchill, of Chartwell in the County of Kent (1965) Baron Duncan-Sandys, of the City of Westminster (1974) Baron Soames, of Fletching in the County of East Sussex (1978) Baron Soames of Fletching, of Fletching in the County of East Sussex (2022)
Clementine Ogilvy Spencer-Churchill, Baroness Spencer-Churchill (1885–1977) Diana Churchill (1909–1963) ≠ Edwin Duncan Sandys, Baron Duncan-Sandys (1908–1987) Mary Soames, Lady Soames née Spencer-Churchill (1922–2014) = Arthur Christopher John Soames, Baron Soames (1920–1987) Arthur Nicholas Winston Soames, Baron Soames of Fletching (b. 1948)
Sieff, Weidenfeld and Haslam