Philip IV, Count of Hanau Lichtenberg
Philipp IV of HanauLichtenberg was from 1538 to 1590 the reigning Count of HanauLichtenberg. Before his accession he had already conducted government business on behalf of his father, Count Philipp III. He was very interested in alchemy.
Count Philipp Ludwig I was still a minor when he inherited HanauMnzenberg in 1561. Philipp IV took up the guardianship, together with Count John VI of NassauDillenburg. When Philipp Ludwig I died in 1580, they again acted as guardian for his minor sons Philipp Ludwig II and Albrecht of HanauMnzenberg. This time, there was a third guardian Count Ludwig I of SaynWittgenstein. Because Albrecht was only born in the year before his fathers death and the fact that there were substantial religious disputes between the guardians, the guardianship could only be terminated in 1608. Philipp IV, however, could be replaced by his son Philipp V in this guardianship council in 1585.
Source: Wikipedia