Earl Temple was an active supporter of John Wilkes.

George Grenville the brother of the 2nd Earl Temple was also to serve as Prime Minister.

At the same time Earl Temple turned his attention to the various temples and monuments.

In September 1779, he succeeded his uncle as Earl Temple and moved to the House of Lords.

Although known as a man given to confrontation and strife, Earl Temple did get involved with one of London's most fashionable charities of his time.

Their eldest son William succeeded as fourth Earl Temple of Stowe in 1889.

His elder brother was Richard Grenville, later the 2nd Earl Temple.

As his father's son and heir apparent, he was styled Earl Temple from birth.

Resultantly, their eldest son, Richard, would became the second Earl Temple.

This may have affected the political position of his relatives like Earl Temple.