My great grandfather immigrated to NYC from Lomza Gubernia of Biyalstok Province of Russian EMpire (Poland today) in 1885. We don't know his original name, though the family lore is his name was Golembek. It was a Jewish name in that part of POland. On 2 Dec. 1888 he married under the name Charles Edward Silverman and that is the name for which we have records.
I suspect he changed his name but would love to find the court record if it exists. Then we can trace his family back to Lomza. How do we check on name change records for Lower East Side of Manhattan from period 1885-88.