Question: When did Count Palatine Joseph Charles Of Sulzbach's father die?
Answer: 11 July 1732

Joseph Charles, Hereditary Prince of Sulzbach (German: "Joseph Karl"; Sulzbach, 2 November 1694 – Oggersheim, 18 July 1729) was the eldest son of Theodore Eustace, Count Palatine of Sulzbach. Theodore Eustace "(German: Theodor Eustach"; 14 February 1659 – 11 July 1732) was the Count Palatine of Sulzbach from 1708 until 1732.