So the time line of births goes approximately
Mark Dyer 1750 (died 1832)
Henry Moreton Dyer 1775 (died 1841)
Mark John Dyer 1800
So Mark John Dyer 1800 could (theoretically) be
- a son of Mark Dyer 1750
- a son of Henry Moreton Dyer 1775
- a son of a different son of Mark Dyer 1750
- a son or grandson of a brother of Mark Dyer 1750
(or none of the above, of course!)
Henry Moreton Dyer claimed to be the only son of Mark Dyer 1750 when Mark Dyer 1750 died in 1832 -- he could have been the only
surviving son (and Mark John Dyer 1750 could have been the son of a deceased son of Mark Dyer 1750)?
It seems Mark Dyer 1750 had a brother who had daughter Mary Dyer.
Mary's father could have been younger than Mark Dyer 1750, and also had son Mark John Dyer 1800. Mark Dyer 1750 would have made provision for her in his will because he had taken her in as a daughter -- whereas by 1832, Mark John Dyer 1800 was married and independent. Possibilities ...
If he made a bequest to Mary Dyer without appointing trustees or such, she must have been an adult? As a daughter of his brother, she would most likely have been middle-aged.
Where in London did Mark Dyer die in 1832? Presumably he left any real estate to son Henry, but perhaps Mary was in the same vicinity and we could look for her in 1841/51 or for her death that way.
That looks like a big question -- who was the brother of Mark Dyer 1750??
Do you suppose the long line of Dyers in Barbados is connected? (My sister will be in Barbados in December for a week; if she had a clue about any of this, I'd make her do lookups!) At FamilySearch, search for any Dyer event in West Indies 1600-1850, say. It seems to start with Roger, Thomas and Francis having children baptised 1648-1670, and some marriages around the same time.
Oops, crossed in the post. I've been trying for a few years to help someone find a coach painter and/or artist ancestor who was apparently in Canada in the early 1800s -- we cannot figure out who the modern-day person's grandfather born c1860 was, even, but he has in his possession some unsigned early 19th century watercolours of military sites in Ontario, copies of which are now in the possession of historical authorities here in Canada I put him in touch with, who are thrilled with them. Maybe they're all related.
I myself appear to be descended from Hills of Devon/Cornwall (in fact, the Alphington connection) and am in the middle of having DNA testing done to try to prove or disprove that theory (the paper trail I discovered is solid, but the tall paternity tales remain). Maybe your dastardly William Hill (I swear, the name second only to James Hill for common-as-dirt in Devon, and I have a William son of James ...) was one of mine!