My great grandfather Leib Lebenson arrived in NY in 1904, coming from Dubrovno (now Belarus). His contact in NY was his cousin Isaak Ruchamkin on Clinton Street. I have not found Isaak's info but I did find Elias living on Clinton Street in the 1905 census. My question is: Is there an Isaak or do you think he was referencing Elias. I have not found one record for Isaak in NY. Thank you in advance - Jennifer