I have a real problem with Peleg Manchester being listed as the father of Thomas Manchester, b.ca 1620. It appears in the records at the Family History Center in Salt Lake (I don't remember which record, maybe the IGI) and there is only a contributor and no citation of source listed.
The problem is once entered, these things live on whether they are correct or not. I have run across two genealogies of the Manchester family that are all mixed up. One is a Doty genealogy, which Alden Manchester advised me to ignore and another is a printed book in the LDS library.