Help needed please. in this will, written 1785, he names his children....one is Margt wife of Thomas Fargher (married Patrick 1775)

A real problem for me, as I had William, her father, marrying Ellinor Cowll 1778!! So she can't be her mother. Who was????

I assume he was married before. I've looked at CD Rom for Patrick weddings of William Kelly, in 1700s.
I'm wondering if this is the same William that married Alice Keon, her will 1774....but I think he's the William born 1717.
Surely he'd be too old for a young second wife at 60. He had a family to Ellinor.

The other William Kellys ( and wife's wills) don't fit. ONLY TWO:

Dec1772 WK married to Anne Sayle...her will, states she is a widow.

Nov. 1761 WK marries Ellinor Kelley....witnes Thomas Fargher!!

Any advice would be much appreciated.
Adrienne