Hi Donna,
I am also finding the Taubmans confusing, and especially this generation:
You wrote:
"Second Generation
2. John TAUBMAN was born before 19 May 1754. He died on 6 Feb 1824. buried 10 Feb 1824 Malew
We don't know who was the wife/mother"
This might have already been mentioned, but it looks as though John Robinson made an error with his death date. The John T who was buried on 10 Feb 1824 in Malew appears to have left this will:
www.iomfhs.im/lawsons/twill/1824_012.html
with no Henry mentioned (no children at all?).
I still think Henry could have been b.Rushen (as in census), bapt Arbory, and named in the will of Margaret Taubman (als Moore), wife of John Taubman, as posted previously. There were a lot of children and he was a younger son, so wouldn't have inherited much. This John probably buried Arbory 1803.
Sue