MATHER, Clare C. (nee Costello) Mar 14, 2013. Age 82. Wife of the late William V. Jr. Beloved mother of William V. III (Grace), Kathleen (Ronald) Bertino & Ann Marie Devlin. Devoted grandmother of Sean, Elise, Jenna, Megan & Marialena. Dear sister of Katherine Devitt, John Costello & the late William, Gus & Robert. Also survived by many nieces & nephews. In lieu of flowers, donations in Clare's name may be made to the Phila Multiple Myeloma Networking Group P.O. Box 18154 Phila, PA 19116. Relatives, Friends & Members of OLC Seniors #2 are invited to her Viewing & Funeral Monday 8:30-9:45 AM at Our Lady of Calvary Church 11024 Knights Rd., Phila, PA 19154. Funeral Mass 10 AM.