OSTIGUY David W. of the North End, formerly of South Boston, passed away Thursday September 28, 2017, at the age of 77. Longtime love of Linda A. Livingstone of the North End. Loving father of David and Kristina Ostiguy of Pembroke and Deborah A. Billotte of Abington. Loving step father of John and Leah Livingstone of Quincy, James and Stacey Livingstone of FL, Shawn and Tina Livingstone of Quincy. Cherished grandfather of ten grandchildren. Dear brother of Robert Ostiguy, Phyllis Ostiguy and Gail Mathias all of South Boston. Also survived by many loving nieces, nephews, grand nieces, grand nephews, great grand nieces, great grand nephews and his great great grand nephew. David was a former employee of the Casa Maria Elderly Housing in the North End. Visiting hours in the O’Brien Funeral Home, 146 Dorchester Street, SOUTH BOSTON on Sunday from 4-8PM. Funeral Mass in Gate of Heaven Church, 615 East Fourth Street on Monday at 10:00AM. Relatives and friends are invited to attend both services. Interment will be private.