DATE: Probably saec. xi 2/2 - saec. xii 1/2 (Haapanen 1924); saec. xii med. (Niskanen 2010). ORIGIN: Ecclesiastical province of Cologne suggested (Haapanen 1924); Germany or German influence suggested (Niskanen 2010). OTHER NOTES: Previous references: M 3 (Haapanen 1924).