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William I | |
|---|---|
| Count of Weimar | |
| Reign | until 963 |
| Died | 16 April 963 |
| Noble family | House of Weimar |
| Spouse(s) | (?) of Babenberg |
| Father | (?), Count |
William I (died 16 April 963) is the first known member of the house of the Counts of Weimar.