CENSUS: 1910 - 2521 S. Kedzie (ED 607, Sheet 28B, Lines 51-59), Chicago

OBIT: [I believe this is Lillian's mother's obituary but have no direct proof. Lillian's husband died very early so it's entirely possible that she remarried and became Becker. Also, her father-in-law may have lived on S. Kedzie in 1910 (per the census) which gives this couple the opportunity to meet as the addresses are only a few houses apart.]
1939-04-15 Chicago Tribune (IL)
KOCA
Edition: Chicago Tribune
--Marie Koca, 2521 S. Kedzie avenue, dearly beloved mother of Joseph, Edward, Emil, and William Koca, Josephine Zika, Pauline Vondriska, Albina Hulka, Lillian Becker, and Sylvia Spate. Funeral Monday, April 17, at 2 p.m., at chapel, 3440 W. 26th street. Interment Bohemian National cemetery. Information Lawnd. 2262.

1. Lillian Julia KOCA b. Abt 1895, Chicago, Cook, Illinois, USA; d. Abt 1945, Chicago, Cook, Illinois, USA.
2. Albina KOCA b. 1889, Chicago, Cook, Illinois, USA.
3. 1. Edward KOCA b. 1891, Chicago, Cook, Illinois, USA.
4. Emil KOCA b. 1893, Chicago, Cook, Illinois, USA.
5. Sylvia KOCA
6. William KOCA
7. Pauline KOCA d. Mar 1962, Chicago, Cook, Illinois, USA.

1. 2. Josef KOCA b. 1854, Germany.