His family had settled in Ireland during the early part of the seventeenth century and became prosperous merchants and bankers, who founded Hoare's Bank.
[1] Hoare was educated in law and practised as a barrister in Ireland.
He was elected to the Irish House of Commons as the MP for Askeaton in 1761.
He held the office for an unusually long period of time, sitting until 1800, when the seat was disenfranchised following the Acts of Union 1800 when the Parliament of Ireland was dissolved.
[2] He passionately opposed the union between the Kingdom of Ireland and the Kingdom of Great Britain and spoke at length against it in the House of Commons, despite being ninety years old at the time.