O'Leary, Gertrude M. (Cashman) of Walpole, formerly of Chestnut Hill, July 11, 2011. Beloved wife of the late Wilfred L. O'Leary, (Former Headmaster of Boston Latin School). Loving mother of Ann M. Gessner and her husband James of Chestnut Hill. Devoted grandmother of Sarah and Abigail Gessner both of Boston. A Mass of Christian Burial will be celebrated in The Holy Name Church West Roxbury on Thursday July 14, at 11:30 AM. Relatives and friends are invited to attend. Visiting hours have been omitted. Interment St. Joseph Cemetery. www.lawlerfuneralhome.com Lawler & Crosby Funeral Home 617-323-5600