Which preposition to use with stauffacher

at Occurrences 1%

Werner Stauffacher at once crossed the lake to Uri, to consult with his friend Walther, Prince of Attinghausen, with whom he found concealed a young man of courage and understanding.

in Occurrences 1%

There, in the stillness of night, they often met together for council touching the work which was to be done; thither by lonely paths came Fürst and Melchthal, Stauffacher in his boat, and from Unterwalden his sister's son, Edelknecht of Rudenz.

Which preposition to use with  stauffacher