SHEEHAN, Kathleen “Kitty”, (Hallihane), of Billerica, formally of Somerville and Baltimore, West Cork, Ireland. Beloved wife of the late John J, Sheehan. Loving mother of Daniel and wife Patricia of Arlington, Kevin and wife Mary of Billerica, Sean and wife Susan of Medford, and Patricia Perry and husband Chris of Billerica. Devoted Nana of Brad, Danielle, Branden, Caitlin, Erin, Meaghan, Lily, Molly, Finn, Sarah and Abbygail. Sister of Dan Hallihane of Baltimore, West Cork, Ireland and the late Margaret Hallihane. Kitty, was a homemaker, retired employee of Tufts University Dining Services, and longtime member of the Knights and Ladies of St. Finbar, Shamrock Society. Funeral from the Keefe Funeral Home, 5 Chestnut St., Rt. 60 (adjacent to St. Agnes Church) ARLINGTON on Saturday at 10:30am. Funeral Mass in St. Catherine’s Church, 185 Summer Street, Somerville, at 11:30am. Burial in Mount Auburn Cemetery, Cambridge. Visiting hours at the funeral home on Friday from 3-7pm. In lieu of flowers please make a donation to Massachusetts General Hospital Cancer Center. http://www.massgeneral.org/cancer/support/. For obituary, directions, or to send a condolence visit www.keefefuneralhome.com