FAYS in ILLINOIS,Jacob and Andrew

I really need some help. Anyone know any info on Andrew Fay and Jacob H Fay, sons of Michael Fay and Martha Burton? Jacob is my gg grandfather....some family members have Jacob's brother Andrew being married to a Mary Lessor??? Now, this is interesting......My grandfather Harold Fay married Alice Detgen....his brother: Lewis married Esther Detgen....yes, brothers married sisters.

OK....now, the info I got from a family source is that Andrew Fay married Mary Lessor and had 6 children the last being named Andrew Ray Fay born: 1910.....he married Mae Marie Fay...whose is the daughter of Herman and Daisy....she is a sister to my grandfather Harold. ANYONE that can help me on this I would greatly appreciate it. Thank-you...Shirley