note : *jatt is a RACE not a cast* sikhism does not have a Caste System. There are jatt tribes that are so called “last names“ now, jassam or josan or jassar how ever you spell it it a jatt tribe jassam tribe is from northern pakista/gurdaspur area. People use josan or jassar instead of jassam but it’s a small tribe of jatts, that are also found in Jammu and kashmir. Jassam Jatts are not related to josan or jassar they are distant cousins of the gill jatts.