Peter Lyle Barclay Henderson (1848 – 6 February 1912) was a Scottish architect prominent in the late 19th and early 20th centuries.
In 1863, aged 16, he was articled to architects and civil engineers Charles Leadbetter and James W. Smith.
[1] His pupils from 1886 onwards included Alexander Lorne Campbell, William Erskine Thomson and John Wilson Paterson.
[1] He was admitted as a Fellow of the Royal Institute of British Architects in 1906, having been proposed by Hippolyte Jean Blanc, James Macintyre Henry and Colin B.
[1] For three years, Barclay was moderator of Edinburgh High Constables, as well as being a member of the Merchant Company.