Margaret A. Zymkowski was the daughter of Helena Slawkowska and William "Wladyslaw" J. Zymkowski. In addition to her parents, Margaret was preceded in death by her siblings, Mary Zymkowski, Benny Vincent Zimkowski, Stephen Paul Zimkowski, Felix "Phil" Zimkowski, Sophie Angela Zymkowski Brookshire, and infant brother Edward Zymkowski. She had several nieces and nephews.
She passed away at Calvary Hospital in the Bronx. She last resided in Flushing, Queens.