It appears that Solomon Wolfson (my GF who changed his name to Samuel Wilson after arriving in the U.S. in 1906) was the son of Efriam Wolfson (my GGF). Solomon said he was born in Poltava, Russia in 1887 (today Poltava, Ukraine). Efriam's brother, Mayer Wolfson, married Lifsa Karachick. Their daughter, Frade Wolfson, married Hyman Resnikoff.
I am in possession of a hand drawn Resnikoff family tree prepared in 1979 in Jerusalem by an L.A. Resnikoff and then edited in 1984 in Jerusalem by an "H.R.W." This tree is written mostly in English with some of the names only in Hebrew script. While I can only vouch for the accuracy of this tree regarding my grandfather and his descendants, I believe that it is probably reliable and would be glad to provide a digital copy directly to those who would be interested. I have not identified a Jacob Resnikoff on this tree but he may be there.
I am researching the WOLFSON family that lived in Russia, probably the town of Poltava, today in Ukraine. There is some reason to believe this was a rabbinical family founded by Abraham Wolfson (GGGF) and his wife Hannah LEFSHUN (GGGM). Other than the tree, a family photo and a few family stories, I have been unsuccessful so far in locating information about this family in Russia. Any information or suggestions for sources would be greatly appreciated.