Hosea R. Bemis was b. Jan. 1847 in PA, with father b. NH. I think I have found them in the 1850 Census for South Shenango, Crawford County as given below---

1850 US Census, South Shenango, Crawford County, PA: p. 239, lines 32-40
[Year: 1850; Census Place: South Shenango, Crawford, Pennsylvania; Roll: M432_771; Page: 239; Image: 65.]
(House #157, Family #157)
Bemus (Bemis), Samuel C., age 40, Shoemaker, b. NH
Margaret, age 38, b. NY
Maria, age 15, b. Canada
Caroline, age 12, b. PA
Hiram, age 7, b. PA
H. R., (male), age 4, b. PA <---------
Margaret L., age 1, b. PA
Wilson, La Fayette, age 22, b. Canada
Wilson, Elizabeth, age 28, b. PA

and Samuel in the 1840 Census in Sadbury, Crawford County--
1840 US Census, Sadsbury, Crawford, Pennsylvania; Roll: 452; Page: 420.
Bemus, S. C.
Males: 1 10-15, 1 30-40;
Females: 2 <5, 1 20-30

No further info for father Samuel C., but Hosea R. Bemis is known for three descendant generations in California.
If you can help with the above, I would very much appreciate your
advice and assistance. I know that birth records were not kept until after 1850 or so in PA. Thank you----