Arnold of Altena explained

Arnold of Altena, count of Altena, count of Isenberg and Hövel, Vogt of Werden (1166–1209) was a son of Eberhard IV of Berg. He inherited the north-western territorium of Altena, and became 1st count of Isenberg in 1200.He married Mathilde countess of Cleve daughter of Dietrich III, Count of Cleves and Adelaide of Sulzbach (+12.2.1189). Mathilde's brother was count Diederick IV of Cleve (+1193) who married in 1182 Mechteld (Margaret) of Holland (died after 1203).

Count Arnold of Altena – Isenberg and Mathilde countess of Cleve had issue:

Literature