Thank you again Forfarian
I was just about to say the only correction I have for the dates for the children is that Scotlands People have 26 Sep 1836 for William Henry.
Adamea, Edemia seems to have various spellings for her name.
I have not found the fist Agnes in Ayrshire but haven't tried all the different version of Henry.
I was typing this when Trish posted. So it didn't send.
I will just add that the source for the letter from John William Henry written from Jamberoo in 1840 was a book with a transcript of that letter.
“The History of the Nesbitt Family sometime resident in the townland of Corglass” by Robert Nesbitt. JP. 1930. Robert was the Robert Nesbitt b c1855 who married a granddaughter of James Henry b 1798
James Henry was the oldest brother of my 3x gt grandfather Bryce Henry. Apparently James was born in Scotland in 1798 because his father Brice Henry had sent his wife Mary nee Nelson to Scotland for safety, away from the Irish uprising of 1798. Brice himself may have been a little involved in the uprising. The family of Mary Nelson of Garvaghy's were also from Scotland according to Robert nesbitt.