Callahan of Billerica, formerly of Cambridge, August 20, 2010, Joseph A. Callahan, age 34. Husband of Tenora C. Callahan. Devoted father of Lanecya, Ty, Joseph Jr., and John. Loving son of Desmond "Desi" and Jane (McGoldrick) Callahan of Billerica. Brother of Desire� Callahan of Billerica. Uncle of Kyra, Kire�, and Kyrel. Also survived by his longtime friend Jim Doherty and many other dear friends. Funeral from the Burns Funeral Home, 354 Boston Rd. (Rt. 3A), Billerica, Thursday, August 26, at 8:00 a.m. followed by a funeral mass in St. Theresa's Church, Billerica, at 9:00 a.m. Relatives & friends invited. Visiting hours, Wednesday, 4-8 pm. In lieu of flowers, memorial contributions may be made to a trust fund established for his children at Sovereign Bank, 508 Boston Rd., Billerica, MA 01821. Employee of East Coast Barber Shop, Cambridge. Interment, Fox Hill Cemetery.