Postmasters General of Ireland
... that the Act of Parliament establishing the post of Postmasters General of Ireland was not repealed until 31 years after the Act of Union had united the countries in 1800?
... that the <a class="mw-redirect" href="./Act_of_Parliament" id="mwDUo" rel="mw:WikiLink" title="Act of Parliament">Act of Parliament</a> establishing the post of <b id="mwDUs"><a href="./Postmasters_General_of_Ireland" id="mwDUw" rel="mw:WikiLink" title="Postmasters General of Ireland">Postmasters General of Ireland</a></b> was not repealed until 31 years after the <a class="mw-redirect" href="./Act_of_Union_1800" id="mwDU0" rel="mw:WikiLink" title="Act of Union 1800">Act of Union</a> had united the countries in 1800?