Dennis, Catherine L. (Mercurio) of Medford, September 18th. Beloved wife of the late John P. Dennis. Devoted mother of John J. Dennis and his wife Margaret of Winchester, Karen Thompson and her husband Mark of Waterville, ME. Loving grandmother of Katie and Jack Thompson, Meagan and Tessa Dennis. Sister of Maria R. Shaheen, Concetta Bonanno and the late Anthony Mercurio. Sister-in-law of Hilda Mercurio. Also survived by several nieces and nephews. A funeral mass will be celebrated St. Clement Church, 71 Warner St., Medford, Saturday, September 21st, at 11:30 a.m. Relatives and friends are respectfully invited to attend. Services will conclude with burial at Oak Grove Cemetery, Medford. It has been requested that in lieu of flowers contributions may be made in Catherine’s memory to St. Jude Children Research Hospital, 1 Bridge St., Suite 102, Newton, MA 02458 or St. Jude Shrine, 512 W. Saratoga St., Baltimore, MD 21201-1896.