See below for the backstory: basically, I hope to show that a daughter of Charles and Mary (Beatts) Fleming (both b. Scotland around 1800) had a child named Charles Blake around 1856, who later came to New Zealand and married Jane Charlotte Loader b. 1865. I suspect that this daughter is Jessie b. 1836 who came to Tasmania and had children with several different husbands. I'm out of my element with genealogy in that hemisphere and I hope someone can give me some good places to start looking.
The Backstory: I have identified a group of nine kits on GEDmatch for people who all descend from Charles and Mary (Beat/Beatts) Fleming. We descend through four different children, and all are g-g-g-grandchildren, except for my mother and uncle, who are g-g-grandchildren. The pairwise comparisons show what is to be expected: most of the cousins in the group match each other, but there are some non-matches. My mother and uncle are the only two in the group to match all of the others, and their matches are typically stronger.
Now here's the puzzle: there is another man, I'll make up a name "Bob", who lives in Australia and matches seven of the group, but he knows of no connection in his tree. From the strength of the matches, Bob seems to be about as strongly placed as the other g-g-g-grandchildren, so I tentatively assume that he is.
Recently, Bob's first cousin put a kit on MyHeritage and triangulates with Bob and my mother and uncle. Their common ancestors were Bob's paternal grandparents, born in the 1880s. This fits the timing well, since this is about the right spacing for one of them to be a g-grandchild of Charles and Mary, which would make Bob a g-g-g-grandchild as I suspect.
Now Bob's tree shows his paternal grandparents and lines through their grandparents, although I can't speak to the sourcing. Four of these grandparents were born in England, and two were probably born too early to be a child of Charles and Mary. That leaves one couple, shown as Charles Blake and Mary Daniel born ca. 1830, and their child of interest is Charles Blake b. 1852 who married Jane Charlotte Loader b. 1865, b. and d. in New Zealand. To summarize the analysis -- I would suspect this Charles 1852 to be a grandchild of Charles and Mary Fleming, so one of his parents Charles Blake or Mary Fleming.
Now Charles and Mary have *known* children named Charles and Mary, so that causes a problem (and of course, Blake would require a changed surname). But from the strengths of the DNA comparisons, I had expected Bob to descend from Charles and Mary Fleming's daughter Jessie b.1836, who emigrated to Tasmania and had children with several different men. It seems to me the easiest fit for the above data is to assume that Mary Daniel is wrong and that Charles Blake b. 1852 is the son of Charles Blake b. possibly ca. 1830 and Jessie Fleming. So my question above is asking for resources to begin investigating this hypothesis.