I've found references to Jane Gillham wife of John Minter with both one L and two depending where I am looking.So I'm not too worried that most references on the Minter side seem to use one L and this one uses two.
(I also have double L's in the paper information I got from my grandmother.)
If you discount the number of L's the main difference is the birthdays.Everywhere that I can find says John Minter's wife was born April 21st 1773.Some even refer very exactly to her age at death "Jane Minter, wife of John Minter died September 24, 1834 at 7 o’clock at night, aged 61 years 5 months and 3 days." which matches the April date.
The Jane Gillham daughter of Thomas Newton Gillham Jr and Susannah McDow in the link above is listed as being born October 21st 1773.
Exactly 6 months apart to the day.
I suspect these two Janes are really the same Jane, and someone along the years just miscopied the birth month.(I'm guessing April is the right date.)
Things that match:Name, State of Birth, Year, Day of Month, State of Birth Things that don't match:Month of birth
I couldn't find enough other information to be conclusive though.Anybody have any tips on how I might confirm (or deny) that these two Jane Gillham's are the same person?