He is the grandson of Alan and Susan Cohen of Denver, Warren and Patricia Henderson of Dunbarton, N.H., and Janet Gagnon of Tucson.
Joshua attends Orange Grove Middle School, where he plays percussion in the band. He was president of his seventh grade philanthropy group at Congregation Or Chadash and volunteers at Orange Grove Middle School. For his mitzvah project, he volunteered at TRAK (Therapeutic Ranch for Animals and Kids), where he cleaned up after and cared for the animals. He also volunteered at Integrative Touch for Kids, where he played with and assisted other children in play.