| Sources |
- [S288] St. Hedwig's Church Records, Milwaukee, Nov 1892, Frank Pialkowski & Kataryna Lindner.
- [S251] Wisconsin Marriages, 1836-1930, Source Film 1292299; Project I00649-3; Catharina Lindner & Frank Piatkowski; 1892.
- [S173] 1920 US Census, Ward 13, Milwaukee, Milwaukee Co., Wisconsin; 154; Sheet 2A; h.15 f.28; Kate Piatkowski; 4 October 2011.
- [S305] Swiete/Schwenten Kirchenbuch, 1733-1929, Baptisms; Catharine Lindner, 29 Mar 1868; 1868.
- [S176] Obituary - Milwaukee Journal-Sentinel, Catharine Piatkowski, Obituary; 2 February 1939.
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