The Lordship of Broich was a strategic location of whose overlordship the powers of Westphalia and the Lower Rhine had fought over constantly, and the dispute continued after the creation of the line.
In 1449 the counts of Limburg Hohenlimburg and Broich became embroiled in a succession dispute with Neuenahr-Alpen.
The dispute quickly led to armed warfare, and in 1460 both parties were made subject to an arbitration of the Archbishop of Cologne.
Since 1479 the county of Limburg Lenne was ruled in condominium between Dietrich and Von Neuenahr married with count William's onliest doughter.
In 1505 he married his adopted heiress Amoena of Sayn to Count Wirich V of Daun-Frankenstein, and with his death in 1508 the Castle and Lordship of Broich and his partitial rule in Limburg were inherited by them.