I have "Rolin" and William Mann as sons of Thomas Mann. There was another brother Thomas Jr., and probably more brothers that I don't have. I have Thomas Jr.'s birthdate as 1 Apr 1769, William's as abt 1770. No date for Roland, but I have his wife as Barbara Holstein and 3 sons born between 1783 and 1795, one named Roland Taylor Mann. A lot of this family ended up in the Hendricks/Parke/Vermilion Co. Indiana area. Unfortunately, I don't have Isham but...
E-mail me at
dotsicle5@sbcglobal.net
I will see if I can put you in touch with a Mann cousin who has more info than I do.
Nancy