Sponsored Links Justin Trainor dating Whom? Justin Trainor is currently single Justin Trainor Complete Dating History Add new Post Sponsored Links Justin Trainor wiki Login to Edit Bio: Younger brother of pop superstar Meghan Trainor who is a music producer. He grew up in Nantucket, Massachusetts.Date of Birth: 24 Jan, 1996Zodiac Sign: AquariusPlace of Birth: Nantucket, Massachusetts, United StatesAge: 28 years oldProfession: Family Member Show more bio data > Justin Trainor Latest Videos