I have located the family I was seeking which was headed by Ann BLACK in Baldwin Twp. on 1860 Allegheny Co. PA census (p 46).
David BLACK and Anna LENHART are enumerated on 1850 census in Armstrong Co., PA (Wain Twp., p 251b).I believe that the will probated in 1857 in Armstrong Co. PA is same David BLACK. This will names wife, Annalisa, and makes mention of offspring but does not specifically name any of them. (Residence- Wayne Twp; Year 1857--Vol: 2 Page: 122; Estate No. 1221)
Offspring (all born in PA) are believed to be: Susanah b. abt 1833 Catharine b. 08 Sep 1835 d. 27 Jan 1865 (1st wife of Jacob WILDS) Elizabeth b. abt 1837 David b. abt 1839 Jacob b. 15 May 1841 d. 1921 Harrison Co., Iowa Sarah b. abt 1843 John b. abt 1845 Mary Esther "Polly" b. abt 1847 Ann Eliza b. abt 1849 Solomon Lenhart b. 24 Jun 1852 d. 21 Jun 1916 Harrison Co., Iowa
On 1880 census, Ann is enumerated in Poweshiek Co., Iowa (Jackson Twp., ED 196 p 609A)
I have a small amount of additional information on some of the other offspring.And I am interested in corresponding with any descendants of David BLACK and Anna LENHART.My ancestor, Samuel Porter BLACK, married the eldest daughter of Jacob WILDS and Mary MILLER(Jacob's 2nd wife).David H. BLACK (Samuel's brother) married another daughter of Jacob WILDS and Mary MILLER.I am still trying to learn if Catherine E. BLACK (Jacob WILDS' 1st wife) was related to these two BLACK brothers.