Irmgard was born in 1551, the daughter of Johann II von Rietberg and Agnes van Bentheim-Steinfurt. The place is not known.
She died on 31 JUL 1584. The place is not known.
Her husband was Simon VI zur Lippe, who she married on 26 MAY 1578. The place has not been found. They had no known children.
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Irmgard von Rietberg-Arnsberg |
Johann II von Rietberg |
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Agnes van Bentheim-Steinfurt |
Arnold II van Bentheim-Steinfurt |
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Adelheid von Hoya |
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Walpurga van Brederode-Neuenahr |
Walram II van Brederode |
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Anna von Neuenahr |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | 1551 |
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| Death | 31 JUL 1584 |
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