Siegmund was born in 1421, the son of Ernst VIII (II, IX) von Gleichen and Margarete von Henneberg-Schleusingen. The place is not known.
He died on 08 MAR 1494 in Tonna.
He had two marriages/partners. His first wife was Agnes von Querfurt, who he married in 1453. The place has not been found. Their six known children were Siegmund II (<1470-1525), Agnes (?-?), Ernst (?-?), Wilhelm (?-?), Margarethe (?-1518) and Philipp (?-?).
His second wife was Katharina von Schwarzburg-Blankenburg, who he married in 1462. The place has not been found. They had no known children.
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Siegmund I von Gleichen-Tonna |
Ernst VIII (II, IX) von Gleichen |
Ernst I (VI/VII) von Gleichen |
Hermann I von Gleichen-Tonna |
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Sophie von Honstein-Klettenberg |
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Agnes z Koldic |
Thimo VI z Koldic |
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Bertha von Wildenfels |
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Margarete von Henneberg-Schleusingen |
Heinrich XI (V) von Henneberg-Schleusingen |
Johann I von Henneberg-Schleusingen |
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Elisabeth von Leuchtenberg |
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Mechtild von Baden |
Rudolf VI von Baden |
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Mechtild von Sponheim |
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| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | 1421 |
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| Death | 8 MAR 1494 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | graf von Gleichen-Tonna | |||||
| Nobility Title | 1456 | graf von Gleichen | ||||
| Nobility Title | 1456 | herr in Tonna |