This 1907 photo of the family of Silas Waymouth includes Ada second from the left in the back row.

Ada married Charles S H Waymouth (next to Ada, third from left) in 1902 at Edinburgh.   In 1881, Ada (3) was living in Edinburgh with two brothers and two servants.   Next door were George (a solicitor) and Jane Scott and their family.   They were probably relations of Ada.