Peter, I believe I know who Andrew's parents were: (1) Rutherglen is in Glasgow. (2) The 1881 census has 4-year-old Andrew Lynn, born in Glasgow, listed as a son of James and Louisa Lynn in Glasgow Barony Parish. (3) Other children in the household include a 7-year-old daughter named Jane. (4) Jane's baptismal record says that she was born 3 Aug 1873 in Glasgow and that her parents were James Lynn and Louisa Dickson married 17 July 1865 in Glasgow Temple Parish. (5) James Lynn had a brother John who lived in Rutherglen.