Like his father he was a womaniser of the first water, never married and kept two mistresses in Gibraltar. One was an English girl who lived openly with him in the Convent and the other was his housekeeper. It was O'Hara who built a pied-a-terre on the South side of the rock in order to keep his two families apart from each other. Today the place is known as Governor's Cottage. Little wonder then that his nickname was 'Cock of the Rock'.
dec 1797 Gardiner Henry Guion dismissed as Agent for Transports
governor until 7 jun 1825 Gardiner Henry Guion: For having conveyed his excellency the Earl of Chatham,governor of Gibraltar, with his suite, from that place to England, in HMS Tribune ?147.12
Journals of the House of Commons Vol 81 (2 feb-31 may 1826)
followed by George Don, acting Governor
20 June 1830 Gibraltar becomes a British Crown colony