Which preposition to use with cofferer

at Occurrences 1%

Two people so well disposed towards each other were very soon in the closest engagement; and the first proof Madame Platen gave him of her affection was introducing him to the favour of the Elector, who took it on her word that he was a young man of extraordinary merit, and he named him for Cofferer at his first accession to the Crown of England, and I believe it was the only place that he then disposed of from any inclination of his own.

Which preposition to use with  cofferer