Which preposition to use with mcglashan

at Occurrences 1%

However, on May 16, 1879, he and I, by invitation, joined Mr. and Mrs. McGlashan at the Golden Eagle Hotel in Sacramento.

from Occurrences 1%

" Upon receipt of this communication I wrote Mr. McGlashan from San Jose that I was nerved for the ordeal, but that he should not permit me to start on that momentous journey if his proposed arrangements were at all doubtful, and that he should telegraph me at once.

Which preposition to use with  mcglashan