Given the task definition and input, reply with output. Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Gotthard von Kettler (also Ketteler, German: Gotthard Kettler, Herzog von Kurland; 2 February 1517 -- 17 May 1587) was the last Master of the Livonian Order and the first Duke of Courland and Semigallia.
Answer : 17 May 1587
What was the death date of Gotthard Kettler?