Much gratitude to you all. Rosie: My cousin Toni was originally responsible for naming Duncan and Catherine as her parents, placing her birth in 1802. That's because it was the only reg. for Catharine Fletcher in OPR. On her death cert. her birth year is 1806, which is what she also nominated on most census records. Many trees simply followed that. Now I am certain that her parents were in fact John Fletcher and Mary McLaren, because as Trish correctly reveals, both Margaret and James were Catharine's children, born in Ardchattan (as was my g.grandfather Colin, their youngest sibling) and they are recorded as staying with Mary (McLaren) Fletcher on census nights, and Margaret is even named as her granddaughter. One of the trees on "Ancestry" confirming this is mine, and the other is my cousin Lorelle's tree. It was Lorelle who convinced me of John and Mary, rather than Duncan and Catherine, as our Catharine's parents. Also, Catharine always nominated Glenorchy, where all the Fletchers of this line are registered, as her birthplace. She moved to Ardchattan when she married my 2nd g.grandfather, Donald Duff. My maternal grandmother was Olive (Duff) Fullwood, Colin's daughter. I would love to find official registration of her birth, but, failing that, the census records nominating Margaret Duff as granddaughter, and James Duff (both definitely Catharine's children) staying with Mary (McLaren) Fletcher (and John Fletcher earlier before his death) are perhaps more confirmation of an ancestral line than most family researchers tracking Highlanders can hope to find. Again, many thanks to you all. I would be grateful for any future revelations. :-)