[1] He was born in Largo House, Rathmines, Dublin on 25 April 1877.
[1] He spent six months apprenticed to Thomas Edward Marshall of Harrogate and went into partnership with his father on 10 April 1902.
[1] His assistants and students included Arnold Francis Hendy, Sheila Tindal and Guy Hemingway Yeoman.
[1] He married Mary Josephine Mangan of Dunboyne Castle on 21 November 1905.
[1] They had one son, Frank William Barrett Mangan Byrne, who was born in 1910 and became a captain in the Royal Irish Fusiliers.