Which preposition to use with rigaud

at Occurrences 1%

I went to Oxford to the meeting of the British Association (lodging I think with Prof. Rigaud at the Observatory) on June 16th, and read part of my Report on Astronomy in the Theatre.

for Occurrences 1%

He was a Christ Church man, and one of two in the first of the Oxford Honour lists in 1802, with E. Copleston, H. Phillpotts, and S.P. Rigaud for his examiners.

to Occurrences 1%

I applied through Prof. Rigaud to the Delegates of the Clarendon Press for a copy of Bradley's Observations for the same.

Which preposition to use with  rigaud