Bavarian window, outpouring of the Holy Spirit, Pentecost window with Mary, Peter and Paul, given by the Bavarian King Ludwig I, at bottom the four Latin church fathers Ambrose, Gregory, Jerome and Augustine, coloured stained glass window in Koelner Dom,. Bavarian window, outpouring of the Holy Spirit, Pentecost window with Mary, Peter and Paul, given by the Bavarian King Ludwig I, at bottom the four Latin church fathers Ambrose, Gregory, Jerome and Augustine, coloured stained glass window in Ko