Pierre Testu-Brissy (1770? – 1829) was a pioneering French balloonist who achieved fame for making many flights astride animals, particularly horses.
Testu-Brissy made his first balloon ascent in 1785. He made the world’s first electrical observations on June 18, 1786, as he ascended into thunderclouds, and said that he drew remarkable discharges from the clouds by means of an iron rod, carried in the car.
He subsequently undertook more than 50 flights in his lifetime, including the first ascent on horseback on October 16, 1798 from Bellevue Park in Paris. He and his horse made more than fifty of these documented flights.
I can’t help but wonder what was going through the horse’s head during the first such ascent, at least.
Via Wikipedia.