Rapperswil Castle, the town walls of the former locus Endingen and the parish church were built by Count Rudolf II and his son Rudolf III of Rapperswil around 1220/29.
On 24 November 1446 Ellsbetha, gräffin zu Togckenburg granted a benefice (Pfründe) in the amount of 800 Rheinische Gulden to the Allerheiligen altar of the church, sealed by Countess Elisabeth and certified by Schultheiss und Rat der Stadt Rapperswil [REF].