First there is no passenger listing for any Sarah McQueen and her "mother" entering the states at any time frame. There is a Sarah McQueen that arrived about 1726 - 1727, different ship and she was an adult convict, transported for stealing from London. Also, Dugal's wife never left Scotland and he did have a daughter that inherited in 1731 from her Uncle, Lachlan Mackintosh, head of Clan Chattan. This would indicate that Dugal's first wife, Elizabeth, had died. The Mackintosh's kept copious records. Dugal owned land in Scotland and there are records for him, his marriage and at least the one living child, his daughter, Anne. Anne married a Robert Mackintosh and she had 2 sons, one a sailor named William. Grace Brown, was his second wife. As the church records were destroyed in a fire in the 1700's the information is gleaned from Scottish land records, session records and the records kept by the Mackintosh's (Mackintosh Muniments 1442 - 1820). This help any? Basically, the time frame is wrong for Sarah to have been a daughter of Dugal's.