"Frederick Davidson is listed in the 1891
census, then aged 24, living at 59 Thistle Street, Edinburgh. He is
described as a photographic retoucher
"In the 1881 census, there is a family of
Davidsons living at 29 North Bruntsfield Place, Edinburgh. It
includes a Frederick. His age is not quite consistent with that in
the 1891 census, but I have found no other in Frederick Davidson in
an Orcadian, is a painter.
Frederick's two brothers, William and John, are also painters."