Hello cousins - I am a bit late joining you, but thank you for the invite. I am new to Roots chat, but now that I found page 9 of this thread I will read backwards. Flora McEachern, wife of Peter McArthur was my husband’s cousin according to DNA matches. Flora is almost certainly the daughter of Donald McEachern and Flora Currie. In 1861 she is living adjacent to her brothers Neil McEachern, Archibald McEachern and also her Aunt (sister of her father, Donald) Catherine McEachern McIntyre. The McEachern family lands were adjacent to each other with Donald’s children and sister all living together or beside each other. Brothers of Donald and Catherine, John settled on Con 8, lot 11 and Duncan on Concession 8, lot 12 in 1837. Donald and Catherine emigrated later, between 1851 and 1861. The 1852 census for Oro has been destroyed, so that leaves a bit of a gap.
PS - Kawartha Lakes used to be Victoria County and a massive number of Islay and Mull Scots emigrated the Eldon, Mara, Brock and Simcoe, which all adjoin one another to the east side and north of Lake Simcoe in Central Ontario. I live in Eldon and my husband’s family are mostly still in the area with his uncle living on our original homestead from 1844