Given the task definition and input, reply with output. Generate a correct and concise answer for the question based on the words in the context.

Context : Gerhard Westerburg (Cologne c.1490 -- 1558 in Dykhausen, Sande, Lower Saxony) was a German jurist and Anabaptist theologian.
Question : The death of Gerhard Westerburg occured on what date?
1558