I have been trying to sort out (a) what we know for sure re Hannah McCrosson [McCrossan-McCrossen-McCrossin] and (b) what I have heard from other researchers about her (but have not been able to verify independently) and to use those to formulate a hypothesis as to the father of Hanna McCrosson.
What we know: 1. Hannah McCrosson was born about 1828 (source: she was age 42 on 1870 census, Mercer Co. PA as O.P. Kirby) 2. She married Oliver Perry Kirby (source: 1870 census, Mercer Co. PA; he is shown as age 50) 3. Their children: Josias D., born about 1850-1; Elizabeth born about 1851-2; Sabilla born about 1853-4; John H. born about 1858; William A. born about 1860; Lafayete born about 1860; and Alonzo born about 1866 (source: 1870 census, Mercer Co. PA). [Note: I descend from Sabilla/Sybilla, who married Josiah Orr.] 4. McCrossan/en/in/on families in 1820 census: Mary (Baltimore); Thomas (Anne Arundel Co. MD); Delmas (Ontario NY), and Delmas W. (Ontario NY). (source: Ancestry.com 1820 Fed. census). [Based on the 1830 census, see below, my conjecture is these are the two David McCrossens from the 1830 census from Ontario, NY] 5. McCrossan/en/in/on families in 1830 census: Mary (Baltimore); Robert McCrosson (Lawrence, AL); Daniel McCrosson (Clinton, NY); David McCrossen (Ontario, NY) [I believe this may be Dr. David Crossen, b. 1807 NY; d. after 1880 census MI]; a second David McCrossen (Ontario, NY) [I believe this David McCrossen was b. 1813 NY and d. 1892 NY; he was too young to be the father of Hannah b. 1828]; James McCrossen (Ontario NY) [I believe this James McCrosen was b. 1818, thus is too young to be the father of Hannah, b. 1828]; John McCrossen (Butler, OH); and William McCrosson (Norfolk, MA). 6. No William McCrosson appears in the 1840 census (source: Ancestry.com 1840 Fed. census).
What I have seen (via emails) from others: 1. Hannah McCrosson's mother was Tabitha McKelvey, who immigrated from Ireland in 1824 and that she (and her husband McCrosson) died with Tabitha was under 5 years of age (thus died 1829-1833). 2. Tabitha McKelvey had a sister named Agnes McKelvey, who married Robert Wallace in Milton (Norfolk) MA in 1825; after the death of Tabitha and her husband McCrosson they took in Hannah McCrosson to raise her; and then moved to Mercer Co. PA by 1830 and further raised Hannah there. 3. Hannah was born in MA (or "at sea").
My current analysis: 1. The only McCrosson in MA in the 1830 census was William McCrosson. 2. No William McCrosson is shown in the 1820 Fed. census or the 1840 Fed. census (in any State). 3. This William McCrosson arrived in the US after the 1820 census (which would be consistent with Tabitha McKelvey and her family arriving in 1824). 4. This William McCrosson probably died after the 1830 census and before the 1840 census. 5. That would be consistent with the father of Hannah McCrosson dying before she was age 5 (before 1833). 6. The William McCrosson in the 1830 census was in Norfolk County, MA, which is the same county (town of Milford, Norfolk Co. MA) where Agnes McKelvey (sister of his wife Tabitha) was married (to Robert Wallace) in 1825. 7. Thus, I conclude that this William McCrosson from Norfolk Co. MA in the 1830 census was the father of Hannah McCrosson and the husband of Tabitha McKelvey. What do you think? Michael Phelps.