Which preposition to use with darley

as Occurrences 1%

"Splendid!" said the Widow, and to tell the truth, she was not far out of the way, and with Helen Darley as a foil anybody would know she must be foudroyant and pyramidal,if these French adjectives may be naturalized for this one particular exigency.

at Occurrences 1%

The dooties of Miss Darley at the Institoot were important, very important.

by Occurrences 1%

The principal, Mr. Silas Peckham, carried him to the desk of the young lady assistant, Miss Darley by name, and introduced him to her.

for Occurrences 1%

So a message was sent to Mr. Silas Peckham, at the Apollinean Institute, to know if he could not spare Miss Helen Darley for a few days, if required to give her attention to a young lady who attended his school and who was now lying ill,no other person than the daughter of Dudley Venner.

Which preposition to use with  darley