See discussion on William Banks Feb. on this message board. Feb. 2008. William Banks claimed to be born in Peel Oct. 21, 1811 parents Thomas and Catherine Banks. This information is not on the IGI so you will need to check German parish christenings yourself. Most of the Manx Banks's were from Onchan but Banks do show up on the Manorial Rolls for Peel. For records of Peel cottage owners which are on the Manx Notebook, there are the following Banks family owners:
1) 29 1740 James Bancks for part of a garden near Cowell's house
2) 29 1750 Issab Bancks and Robert, James, Issab, Jane, Ann, John, Matthias and William her children. a part of a garden near Cowell's house
3) There is also a James Bankes who had a cottage in Peel one and half d. rent in 1703

Thomas, the father of the subject William Banks might have been the son of one of the 5 sons of Issab Bancks and James? Bancks

Perhaps the Banks researcher on the Island will have already made the connection.

I have spoken to DeCima Banks, William Banks grandaughter in case you haven't already been in contact with her.