I've traced my Sugarman side back to my great-great grandfather Louis Sugarman, born 1854 in Russia, most likely Mogilev (now Belarus), though possibly Latvia (near Dvinsk), who was an eye specialist in Little Falls, NY and died in 1928.
His parents were Solomon Sugarman (don't know Russian spelling) and Sterna Gunzburg (aka Ginzburg).
I doubt Louis was an only child, as he was well educated, so the family would have had funds, I presume, to afford multiple children. And, I suspect his siblings might have come to the US, as he was very adamant about family leaving Russia to escape the political troubles he saw coming in the early 1900s.
However, we have lost all connection. Anyone who might have traced their family back to Solomon and Sterna, let me know...
Aaron Sugarman