Thanks for your responses - they help me think this through.
Hi again

I hope you have been thinking through what I said above and not dismissed it out of hand - the stuff regarding William EDGAR.
What I am saying relies totally on the fact that I don't expect to find very many Ropemakers called William born Workington c1838 living in Barrow. If you think there may be several, then it is safe to ignore my point.

Can you find any trace of William EDGAR, Ropemaker, after the 1861 census?
Can you find any trace of a suitable William TYSON before 1861?
TYSON is a common name in Cumberland ... but not many Jonathans. Although the IGI is not complete, it is still a useful tool. Three show up - 1813 Irton, 1816 Eskdale and 1817 Uldale.
The first two are easily found in censuses, a Shoemaker and an AgLab. The Uldale one is not seen again - apart from the 1823 burial of a Jonathan TYSON aged 5 at Ireby early in 1823 - just 2 miles away from Uldale.
If William's father
was called Jonathan, don't you think it surprising that none of his sons had that name? ... but the first was James, the name of William AGER's stepfather (and first daughter Jane, same was William AGER's mother).
An illegitimate in my tree married twice, his father was named as
1) Bates - apparently the brother of the man named as his father at baptism!
2) Eli - his grandfather's name whom hed had presumably lived with.
Another one in my tree used the surname GALLERY in censuses and LISTER in BMDs, these being the maiden and married names of his
grandmother!
Just more things to "think through"

By all means, treat what is on his marriage certificate as your first preference, but do not discard all other possibilities. Making up a father's name for respectability's sake is far from unknown in this game.
