Which preposition to use with procurator

of Occurrences 20%

I pledge you my word that in Lyons he was born, where Licinus [Footnote: A Gallic slave, appointed by Augustus Procurator of Gallia Lugudunensis, when he made himself notorious by his extortions.

in Occurrences 2%

Many a man laughs at a judge in a short dress, who trembles before a procurator in a long gown.

for Occurrences 1%

The first is, in modern language, a Power of Attorney, executed by the Prior of Christ Church, Canterbury, appointing two of the monks of his church to be his procurators for the purpose of receiving from the convent of Anglesey, in Cambridgeshire, a book which had been lent to the late Rector of Terrington.

Which preposition to use with  procurator