You state your mother in law's great grandfather was Andrew Jackson White b. 1810 d. 1871 m. first to Lucretia Rochelle. This is also my line and I also got a lot of handwritten research done by a cousin. Then I found a lot of info in books about this clan. My line is descended from Andrew's son Josephus White b. 1845 in Beinville Parish, Louisiana, d. 1940 in Oklahoma. I have info prior to John White and wife Rebecca Dorsett. His father was Moses White b. 1726 Lancaster Co. PA. His father was Moses White b. 1700 in Ireland. His father was Hugh White b. 1671 in Ireland. His father was Adam White b. 1627 in Scotland. If you don't have all this or want more details, please contact me. 4 years have gone by since you wrote this though, so you probably got all this?
Janey Cooper in California