Question: When did Henry X Rumpold's father die?
Sentence (from "Henry X Rumpold"): Henry X Rumpold, Duke of Żagań also known as the Younger (b. ca. 1390 – d. 18 January 1423), was a Duke of Żagań-Głogów during 1397-1412 (as co-ruler of his brothers) and since 1412 ruler over Głogów (as co-ruler of his brother).
Relevant evidence: No