The title Baron de Hochepied, in the nobility of the Kingdom of Hungary, had been granted to his Dutch diplomat ancestor by the Holy Roman Emperor in 1704, but was recognised by the English College of Arms.

He was the only surviving son of Sir James Porter, the British Ambassador to the Ottoman Empire, and the former Clarissa Catherine de Hochepied.

[2] While a captain in the British Army on half-pay, Porter joined the Whig club on 26 June 1784 and then Brooks's on 15 February 1786.

In 1790 he contested Stockbridge in coalition with West Indies merchant Joseph Foster Barham, and after "exposing the corruption that had secured their opponents' return and strengthening their interest there," obtaining the seats on petition, on 22 February 1793.

In September 1819, George, his nephews, and their issues male, were granted a Royal Licence to bear the title of Baron de Hochepied.