I am trying to identify the maiden name of Laurence's wife. She is recorded in 1920 census and in a 1923 Street directory as Mary M. They were married in Boston in 1916. Can anyone advise if the reference number F63.M36 v.84 on his record can be used to identify the record of her marriage. There were 16 Mary M's married in Boston that year. How can I know which one to research? Any help welcomed.