As well, the lands held by the Counts of Leyen were mentioned once again.
In the small territory held by the Counts of Leyen, the most important economic endeavour was until the early 19th century agriculture.
From 1085 to 1261, it was held by the Counts of Mâcon.
Sassen was once held by the Counts of Nürburg.
In 1295, Würrich had its first documentary mention and was held by the Counts of Sponheim.
From 1518, there was a high court in Demerath held by the Counts of Manderscheid.
Until 1477 it was held by the Counts of Leiningen.
The remaining fourth was held by the Counts of Veldenz.
The main centre is known from 1250 onwards and could then well have been held by the Counts of Leiningen.
The rights to high and low justice were held by the Counts of Habsburg-Laufenburg.