Otto, Lord of Arkel was Lord of Arkel fromMay 1360 until his death.
He was a son of John IV and his wife, Irmengard of Cleves. Otto was born as his parents second son, after his elder brother John, who died during a tournament in Dordrecht in 1352. During his reign, he further extended the family possessions he acquired the Lordship of Haastrecht again, and in 1379, he acquired Liesveld.
Source: Wikipedia