I am trying to learn something about a person named Shraga Feitel, to whom I may be distantly related. He lived in and died in Slonim in 1879 and was listed as being Motz (Moreh Tzedek) there for 55 years. I don't know if he was identified by a last name. Are there any sources I could approach to see whether there is information about him? Your help would be appreciated.