Tracing Douglas family roots - unraveling history, one generation at a time.

| Name | Ziemowit IV of Plock And Kujavia of Masovia | |
| Gender | Male | |
| Death | 30 Apr 1426 | |
| Person ID | I169125 | First tree |
| Last Modified | 19 Aug 2013 | |
| Father | Ziemowit III "Starszy" Prince of Masovia d. 16 Jun 1381 | |
| Mother | Euphemia of Troppau-Ratibor d. Abt 1352 | |
| Marriage | 1335 | |
| Family ID | F35175 | Group Sheet | Family Chart |
| Family | Alexandra of Lithuania d. 19 Jun 1434 | |||
| Children |
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| Family ID | F35173 | Group Sheet | Family Chart | ||
| Last Modified | 24 Jan 2013 | |||
| Sources |
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