Fondly remembered as MM or Ems, Mary Margaret O'Neilof Washington, DC peacefully passed away at homesurrounded by family on May 10, 2023 at the age of 90.She is preceded in death by her husband, Tom O'Neil,parents John J and Mary Angela Lynch, brothers Jack, Bill,and Joe Lynch, and sister Ann Lynch. She is survived byher brother Tom Lynch and sister Kay (Tom) Inglesby as wellas 5 children Tom (Rosie) O'Neil, Kerry (Scott) Matejik,Casey (Katie) O'Neil, Megan (Jamie) Beidleman,Patrick (Lisa) O'Neil, 13 grandchildren, and 2 greatgrandchildren. Visitation, 9 am, and Mass of Christianburial, 10 am, at Shrine of the Most Blessed Sacrament,3630 Quesada Street, NW, Washington, DC onFriday, May 19th, 2023. Internment follows at Mt. OlivetCemetery in Washington, DC. Memorial contributions areappreciated to Capital Caring Hospice, 5225 Wisconsin Ave,NW, #503, Washington, DC 20015 or St George Catholic Church,19199 St. George's Church Rd., Valley Lee, MD 20692.