William Percy Costain
1874 Born in West Corby, Lancs[1], son of Richard Costain, Senior
1911 A building contractor, 37, living in Great Crosby, Lancs, with Maud May Costain 34, his wife and sons Richard Rylandes Costain, 8, and Albert Percy Costain 9 months[2]
1922 W. P. Costain decided to move to London, leaving his brothers to continue with the building activities in Liverpool.
1929 Died in London