William Dowdeswell was born in Nelson, Glamorganshire, Wales in 1872 and was articled to Thomas Roderick (1855-1922) in Aberdare, Wales. He also received correspondence tuition from William Church Howgate (1866-1952). Dowdeswell commenced practice as an architect as an architect in Treharris and Caerphilly in 1896. He died in Wales in 1930. His death was registered in Ruthin.
Church at Bedlinog, Glam; Parish Hall, Treharris; Steam Sanitary Laundry. Dowlais; Methodist Church, Merthyr Vale; block of villa residences, Penydarron, Merthyr Tydfil; housing schemes at Dowlals and Troediphiw; Public Hall, Aberfan; residences at Blackwood and Abercynon; and lay-out of estate of 90 acres at Caerphilly
Directory of British Architects 1834-1914. Compiled by Antonia Brodie, et al. Volume 1: A-K. London; New York: British Architectural Library, Royal Institute of British Architects/Continuum, 2001