On Wednesday, June 2, 2021, William (Billy) Hagan passed away at the age of 59. Billy was born and raised in Cambridge before moving to Billerica in 2002. He attended Cambridge Rindge and Latin where he studied Auto Body and earned the nickname “Buff”. He had a passion for restoring antique cars and collecting all things old. Billy was an avid Boston sports fan. He enjoyed spending time with his family and friends and gardening in his yard. Billy had a great sense of humor and would rarely be seen without a smile on his face. He is survived by his brother James and wife Linda Hagan of Billerica, brother Timothy Hagan of Billerica, sister Heather and her husband Mark Solitro of Bedford, MA niece Erin and her husband Bobby Gilcoine of Billerica, nephew Thomas Hagan of Billerica, great nieces, and nephews: Alexandra Helberg of Brighton, MA, Francesca, Christina and Nicholas Solitro of Bedford, MA. Chloe and Keegan Gilcoine of Billerica and TJ Hagan of Cambridge. He is predeceased by his loving parents Carolyn and James Hagan of Billerica. Visiting hours will be held in the Burns Funeral Home, 354 Boston Road, Billerica, MA on Thursday, June 10 from 4-7 PM.