In 1842, Dr. Gully, with a partner, set up a hydropathy (hydrotherapy) establishment in Great Malvern, in Worcestershire. More popularly known as a "water-cure,"
In 1872, he met a young married woman named Florence Ricardo They became secret lovers and at one time were near neighbours living in Leigham Court Road. Florence became pregnant and Gully performed an abortion.
Florence subsequently met Charles Bravo, whom she married in 1875. On hearing the news from a third party, Gully reportedly tore the letter to shreds. Just a few short months later, on 18 April 1876, Charles Bravo died of poisoning at the Prioiry, Bedford Hill Balham.
The culprit was never discovered; Gully was a suspect, along with Florence herself, but although he testified at the inquest, nothing further came of the case.
His career suffered greatly due to this scandel, his name being removed from all medical societies and journals of the day.