6^th – 9^th century:

The first inhabitants lived there before the founding of the monastery, because
on the hill Posa (Bosau) was a Slavic wall-castle from the 6^th to the 10^th century.
Later, around 970, it was a Ottonic castle. The hill Posa is situated on the
former area of the sorbic district “Puonzouua”.

This district, first mentioned in a charter of German emperor Otto II dated 1^st August 976, is named after the hill “Bosau”.

At the base of the hill was the settlement “Podgrod” (=Podogrodiz), meaning “below the hill”. It is nowadays the area of the upper town of Zeitz, while the lower town was occupied by a sorbic village named “Zitici”. Later on, after the settlement “Podgrod” became the centre of the city and both villages united, the name “Bosau” disappeared and the city. From that time on the city is names “Zeitz”.

Year 995:

King Otto III transfers the territory of Puonzouua to bishop Hugo II of Zeitz and sends the monk Boso to Zeitz for missionary work.

Bishop Dietrich I of Naumburg starts with the construction of a little wooden chapel on the hill Posa the founding of the Benedictine monastery Posa

1115

Monks from Hirsau, order by Bishop Dietrich I, began building a chapel of stone and the rest of the monaste

1118

First time mentioning the monastery in combination with the city of Zwickau

1119

Pope Calixtus II gives approval for founding a monastery, because Bishop Dietrich I paid the foundation out of its private cash box