According to the 1920 census, Mary was Magyar Hungarian.
Noted events in her life were:
• Residence, Apr 1919, 2610 Lowe Ave. 874
• Residence, 6 Jan 1920, 2612 Lowe Ave., Chicago, Cook, IL. 14 Living here were Charles, wife Mary, daughter Margaret, and son Edward. Also living here were the last names of Clipper and Beshik.
• Residence, 23 Apr 1930, 2953 E. 99th St., Chicago, Cook, IL. 3 Living here as renters were Charles, Mary his wife; Margaret, Eleanore, and Shirley Ann, his daughters; and Edward, his son. Also living here is Helen Mayers, his sister-in-law, and the Gasparich family.
• Residence, 7 Sep 1939, 9626 Commercial Ave., Chicago, Cook, IL. 875
Mary married Charles Kostecka Jr., son of Carolum/Karel/Charley Kostecka Sr. and Rosalia Bilek, on 25 May 1918 in Chicago, Cook , IL, USA.76 (Charles Kostecka Jr. was born on 17 Mar 1897 in Illinois 34,56,150 and died in Sep 1963 in Illinois 56,81.)