The only info I have on Henry W. St. John is that he was born in St Louis, MO (according to info on son Henry's birth record), his son Henry was b. in Boston in 1871 and Alice Mabel was the mother; he was married to Alice Mabel Hillard; he was in the Boston city directory in 1872 as a wool merchant; and Mabel remarried in 1876 (presumably, he died, but no proof). Searching all the ancestry DNA matches for St. John makes me believe his Henry W's ancestors were Matthias (b. 1604)/ Mark (b 1633)/ Matthias (b. 1667/68)/ Samuel (b. 1685)/ Job (b. 1725).
Does anyone have any info? I have been looking unsuccesfully for years.