Johann was the son of Gerhard von Loon-Rieneck and Adélaïde de Gueldre. The date and place of his birth have not been found.
His wife was Margarete von Grimbergen. They were married, but the date and place have not been found. They had no known children.
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Gerhard von Loon-Rieneck |
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Adélaïde de Gueldre |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | herr von Stein |