Complex sentence: The church's origin lies in the early 13th century; rich citizens of Gelnhausen planned to erect a church within the town, causing a conflict with the Selbold monastery that owned the clerical patronage for Gelnhausen.
Split into simpler sentences: The church's origin lies in the early 13th Century. Rich citizens of Gelnhausen planned to erect a church within the town, causing a conflict with the Selbold monastery that owned the clerical patronage for Gelnhausen.