A further inscription (in Latin) discovered near Salona, Dalmatia, (now Split, Croatia) honouring the Emperor Marcus Aurelius Probus was dedicated by an "Aurelius Marcianus", a Vir Perfectissimus, described as Praeses, i.e. equestrian governor, of the province of Dalmatia.
When on September 5 Karl Koch, then praeses of the Westphalian provincial synod, tried to bring forward the arguments of the opposition against the Aryan paragraph and the abolition of synodal and presbyterial democracy, the majority of German Christian general synodals shouted him down.
His tenure of the bishopric was troubled not only by domestic bereavements (his three sons died, the first two in 411 and the third in 413) but also by the barbarian invasions of the country (in repelling which he proved himself a capable military organizer) and by conflicts with the praeses Andronicus, whom he excommunicated for interfering with the Church's right of asylum.