In Lord Fitzwilliam's later years the marriage to Obby became strained and there was talk of divorce.
The land for the obelisk was donated by Lord Fitzwilliam and since called Fizwilliam Square.
When Burke heard this he was so much hurt in his turn, that he went to Lord Fitzwilliam and the whole thing was made up".
Lord Fitzwilliam died in February 1833, aged 84, and was succeeded by his son from his first marriage, Charles.
That may have been Pitt's intention, but it is not clear how far Lord Fitzwilliam had been authorised to pledge the government.
Pewett was retired to become a broodmare for Lord Fitzwilliam and produced nine foals:
Within a few years she fell for another man, Lord Fitzwilliam, who not only was a hard-drinking philanderer but needed to divorce his wife to marry her.
This changed after 1808, and Catholics were given the chance to get leases from Lord Fitzwilliam.
Lord Fitzwilliam gave an impromptu ball for her at Milton Park and she danced until dawn.
Lord Fitzwilliam was therefore succeeded by his grandson, the seventh Earl.