Question: When did Hermann Otto I Of Limburg-Styrum's father die?
Answer: 7 August 1621

Jobst of Limburg (19 April 1560, Borculo, Gelderland - 7 August 1621) was count of Limburg and Bronckhorst, Lord of Styrum, Wisch and Borculo (1616), and the son of Hermann Georg of Limburg, count of Limburg and Bronckhorst. He married in 1591 Countess Maria of Schauenburg and Holstein-Pinneberg and they had issue: Hermann Otto I of Limburg-Styrum, count of Limburg and Bronckhorst, lord of Styrum, Gemen, Wisch and Borculo, and from 1640 to 1644 advocate of the imperial abbey of Vreden, was born