Dewdney is an English name that has existed since before 1500.
List of people with the surname
Alexander Dewdney (1941–2024), Canadian mathematician, computer scientist and philosopher Anna Dewdney (1965–2016), American author and illustrator of children's books Christopher Dewdney (born 1951), Canadian poet Edgar Dewdney (1835–1916), Canadian surveyor, engineer, politician, and provincial Lieutenant-Governor Selwyn Dewdney (1909–1979), Canadian author, illustrator and artist, father of Alexander and Christopher Tom Dewdney (born 1933), West Indian cricketer
See also Dudeney