Jerusalem (Mt. Sion) - HOLY SION

Source: 
Petr. Diac., LS
Abbreviation for Journals and Series
Paragraph: 
P, 1
Translation: 

Mount Sion is to the south (of Mount Olivet); there holy Mary died, and there the Lord had the Supper with the disciples. There too he sent the Holy Spirit on the disciples.

(transl. Wilkinson)

Bibliografical ref.: 
Bibliography
Wilkinson, J., 1981
Summary: 
Traditions connected with Mount Sion, from a guidebook compiled AD 1137.