Question: When did Theda Ukena's father die?
Sentence (from "Uko Fockena"): Uko Fockena (also known as: "Uko of Oldersum"; , Oldersum (uncertain) – 13 June 1432 near Suurhusen) was an East Frisian chieftain of Moormerland and Emsigerland.
Relevant evidence: Yes