Died at her home in Rockville, MD on Wednesday, September 13, 2017. Beloved wife of the late Russell Byng Duvall; devoted mother of Julie Stull (Hal) and the late Martin Duvall (Cheryl); loving grandmother of Katherine Elise, James (Caitlin), Martin and James; and great grandmother of Madeleine Elizabeth. Throughout her life, Betty possessed an inner determination that enabled her to accomplish almost everything she set out to do. Friends and relatives are invited to a Memorial Mass on Saturday, October 21 at 11 a.m. celebrated at Holy Redeemer Church, 9705 Summit Avenue, Kensington, MD 20895. Private Interment, Gate of Heaven Cemetery at a later date. Contributions may be made to Holy Redeemer Church or to Montgomery Hospice, 1335 Picard Drive, Rockville, MD 20850.
 

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