Richard Costain (1839–1902) was the founder of Costain Group, one of the United Kingdom's largest, oldest and best-known construction businesses.

Early life He was born and raised in the Isle of Man. His father was a shoe maker.Isle of Man Times Saturday 29 March 1884, page 3

He married on 8 March 1866 at Rushen parish church, to the sixth daughter of Richard Kneen, of Cross-e-Caley in Rushen. Costain lived at Birkdale Park, in Southport.Manchester Courier Monday 19 March 1866, page 4

Career Richard Costain moved to Crosby, Merseyside where, in 1865, he founded a small but well-equipped construction business. In the early days of the business, he worked in partnership with his brother-in-law William Kneen and together they expanded the business until it was operating both in Lancashire and on the Isle of Man. He worked with Richard Kneen of Southport in the 1860s, with the business at 3, Albert Road, in Waterloo, known as Costain and Kneen.Liverpool Daily Post Thursday 30 May 1867, page 4

Kneen and Costain purchased tracts of land, then built many houses on them.Isle of Man Genealogy (1) Masons and joiners were recruited from Arbory on the Isle of Man.

Personal life Richard Costain later lived at Blundellsands, located near Crosby.Isle of Man Genealogy (2)

He died in West Derby in 1902, leaving the business, by then known as Richard Costain Limited, to his son William Percy Costain. He died aged 63 on 1 July 1902, at 'Port-y-Shee'.Liverpool Weekly Courier Saturday 5 July 1902, page 6 His funeral was at St Luke's Church, Great Crosby.Liverpool Mercury Saturday 5 July 1902, page 8

Family In 1866, Costain married Margaret Kneen.

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