Notes for: Frederick William Roberson

No proof that he was actually Edward Frederick's father. No relevant marriage found for Roberson - Perry; Edward's birth certificate would reveal something.
FWR married Emily Brown in 1897, and was with her and son Horace F (born 1902) in 1911. By 1939 FWR was with son Horace, married. Emily remarried to Alfred Giller in 1930, and was with him in 1939.
In 1922 FWR appears to have married Flora Buchanan, born 1884 in Marylebone. In 1911 she was unmarried, a servant in Cavendish Square. By 1939 she appears in Sussex as Flora Roberton, married, with the following other members of her household:
David and Flora L McNair, born 1916 and 1918 in London, mother's surname Buchanan. Also Edward F Roberton (FWR's assumed son). No relevant McNair - Buchanan marriage found (though might have been in Scotland).
Flora Roberton died in 1958 in Sussex.
All very puzzling