How do you specifically descend from Ranald and Ann of St. Polycarpe? Or is it a sibling of Ann's that you descend from? How does Penelope MacDonell married to Ranald of 1/16 Lochiel fit in with the St. Polycarpe couple (Ranald and Anne)? My understanding is that Penelope's husband Ranald's parents were John MacDonald and Isabella, nee MacDonald of Sandpoint? I believe that Ranald (husband of Anne)'s parents were Ranald MacDonald(of Alexander of Ranald)and Mary, nee MacDonald (of Donald of Ranald). They were married in 1806 at Montreal. I do agree that Ann the wife of Ranald of St. Polcarpe is likely a sister to John who married Isabella MacGillivray (of St. Polycarpe).