I wouldn't change my name. My mom's sister and sister-in-law share the same name and we were always able to figure out who we were talking about. Also my sister and sister-in-law share the same first and for awhile the same last name. The only time that caused a problem was when my sister-in-law changed her name on Facebook to her married name and many of my sister's friends tried to friend her since they thought it was her.