I am searching for any info on John Black of Pittsburgh.John was born in PA in 1812 and married Jane (b. 1811) by 1832.He was a prominent grocer in Pittsburgh operating John Black and company established in 1847.He had the following children:Martha Jane (b.c.1832) m. A. Dunlap Miller; Lydia A. (b. 1836) m. Jacob Strotler Reymer; Fanny D. (b. 1838); John Jr. (b. 1840); Margaret (b. 1843); Victoria (b. 1846); and Virginia (b. 1848).By 1862 he founded Black and Miller Oil Refinery with his son-in-law.John may be the son of Martha Black (b. 1778)of NJ.