Hi, thanks.
I expect one was still alive in 1811 , I have baptism of his son William in that year..
The other born 1777 would have only been 35, looks like they lived till later perhaps.
1777 Jan 25 I have baptism of Daniel Jarvis s/o Daniel collier Bro (ughton)
Just a thought , if you have the registers and the time, could you look for other siblings perhaps.
There was a marriage on May 11th 1776 of Daniel Jarvis to a Margaret Dodd, widow.
Thanks.