Tags: Noble.
Count John II the Mad of Rietberg (born: after 1523 – died: 11 December 1562 in Cologne) called the Great was the son of Count Otto III of Rietberg and his second wife Onna Esens.After his uncle Balthasar Oomkens von Esens died in 1540 without a male heir John and his mother inherited the East Frisian Lordship of Harlingerland and John assumed the title of Lord of Esens Stedesdorf and Wittmund.When his father died in 1535 John had to share the County of Rietberg with his older half-brother Otto IV.
