Overview
Gerlach IV of Isenburg-Limburg (died 1289), also known as Gerlach I of Limburg, was from 1258 Count of (Isenburg-)Limburg, ruling over the town of Limburg an der Lahn and some villages in its hinterlands. He was the founder of the short-lived House of Limburg.
Life
Gerlach was the son of Henry (Heinrich) I of Isenburg-Grenzau and his wife, Irmingard of Büdingen, Countess of Cleeberg (now part of Langgöns). Gerlach was a namesake of a senior Gerlach of Isenburg who served as Vogt of the Archbishopric of Trier from c. 1130 to 1147.
After the death of his father, Henry I, in ca. 1227, Gerlach reigned jointly with his brother Henry II over the paternal inheritance. From 1247, Gerlach took the title of “Lord of Limburg.” On May 22, 1258 the division of the inheritance was finally sealed: Gerlach won the dominion of Limburg and Henry II the Countship of Isenburg-Grenzau as their sole possessions.
From a trip to Italy in 1231, Gerlach brought monks of the Franciscan Order to whom he gave permission to construct a monastery in Limburg. This makes it one of the oldest Franciscan monasteries in Germany (the first being at Augsburg in 1221). The monastery was later endowed by the House of Limburg.
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