Which preposition to use with fitzwilliam

as Occurrences 1%

Upon the arrival of Lord Fitzwilliam as Viceroy in 1795, it was fervently believed that full emancipation was at last about to be granted, and Grattan brought in a Bill to that effect.

at Occurrences 1%

I have always heard that the most infelicitous quotation on record was made by the fourth Lord Fitzwilliam at a county meeting held at York to raise a fund for the repair of the Minster after the fire which so nearly destroyed it in 1829.

from Occurrences 1%

On February 9th, a letter reached Lord Fitzwilliam from Pitt, which showed that some changes had taken place in the intentions of the Government, but no suspicion of the extent of those changes was as yet entertained.

Which preposition to use with  fitzwilliam