Berengar's first monastery foundation, the Berchtesgaden Provostry, was commissioned by his mother Irmgard of Rott.
According to legend, it was founded in fulfillment of a vow of thanksgiving for the salvation of his father, Gebhard II of Sulzbach, after a hunting accident at the rock on which the Berchtesgaden Collegiate Church stands today.

His mother Irmgard owned Berchtesgaden from her first marriage with Count Engelbert V of Chiemgau, and as his widow had made a vow to have a house built for use by an "assembly of clergy of communal life" ("congregatio clericorum communis vite").
Due to various worldly affairs Irmgard did not have the time to found the congregation, so shortly before her death she commissioned Berengar with the task, to promote his and her salvation.

In the year of his mother's death, 1101, Berengar appointed the canon Eberwin as the first provost.

Under his guidance, he sent three Augustinian canons and four lay brothers to Berchtesgaden from Rottenbuch Abbey, the mother abbey of the Augustinians in Altbayern and a center of the canonical reform movement.

Berengar and his half-brother Kuno von Horburg-Lechsgemünd then requested papal confirmation for the founding of the monastery.

Probably in 1102 and no later than 1105 Kuno von Horburg and Eberwin traveled to Rome on behalf of Berengar.
Pope Paschal II had very likely on 7 April 1102 placed the Count's monastery under his protection.

He confirmed this privilege in writing to Berengar and Kuno von Horburg.

According to the Fundatio monasterii Berchtesgadensis the Augustinians at first found the lonely wilderness of Berchtesgaden, with its terrifying mountain forests, and permanent ice and snow a very inhospitable place, and sought somewhere more suitable.
Berengar's first monastery foundation, the Berchtesgaden Provostry, was commissioned by his mother Irmgard of Rott. According to legend, it was founded in fulfillment of a vow of thanksgiving for the salvation of his father, Gebhard II of Sulzbach, after a hunting accident at the rock on which the Berchtesgaden Collegiate Church stands today.
His mother Irmgard owned Berchtesgaden from her first marriage with Count Engelbert V of Chiemgau, and as his widow had made a vow to have a house built for use by an "assembly of clergy of communal life" ("congregatio clericorum communis vite"). Due to various worldly affairs Irmgard did not have the time to found the congregation, so shortly before her death she commissioned Berengar with the task, to promote his and her salvation.
In the year of his mother's death, 1101, Berengar appointed the canon Eberwin as the first provost.
Under his guidance, he sent three Augustinian canons and four lay brothers to Berchtesgaden from Rottenbuch Abbey, the mother abbey of the Augustinians in Altbayern and a center of the canonical reform movement. 
Berengar and his half-brother Kuno von Horburg-Lechsgemünd then requested papal confirmation for the founding of the monastery. 
Probably in 1102 and no later than 1105 Kuno von Horburg and Eberwin traveled to Rome on behalf of Berengar.Pope Paschal II had very likely on 7 April 1102 placed the Count's monastery under his protection.
He confirmed this privilege in writing to Berengar and Kuno von Horburg.
According to the Fundatio monasterii Berchtesgadensis the Augustinians at first found the lonely wilderness of Berchtesgaden, with its terrifying mountain forests, and permanent ice and snow a very inhospitable place, and sought somewhere more suitable.
Berengar II of Sulzbach