Question: What is the date of death of Danutė Of Lithuania's father?
Sentence (from "Kęstutis"): The name "Kęstutis" is a derivative from the old form of the name "Kęstas", which is a shortened version of such Lithuanian names as "KęstarasKęstautas" (there "kęs-ti" means "to cope").
Relevant evidence: No