Which preposition to use with constantius

in Occurrences 1%

Such was probably the origin of the crosses seen by Constantine and Constantius in the first ages of Christianity, and such was that of the cross which appeared in the sky in France, to which so many bore attestation.

on Occurrences 1%

Their father, Julian Constantius, brother of Constantine, was murdered by the orders of Constantius on his accession to the throne, and the two orphans lived in constant fear of death.

to Occurrences 1%

We think that, if it was in truth the crown of Diocletian which passed to every Cæsar from the first Constantius to the last Francis, it was no less in the pile which rose into being at his word that the germ was planted which grew into Pisa and Durham, into Westminster and Saint Ouen.

Which preposition to use with  constantius