Having seen your message I am wondering if we are connected. My 3rd great grandfather's brother was JOHN GRENFELL MOYLE who was born in 1781,he married ELIZA AUGUSTA GUILLEMAND, in 1817.He was a physician and a Fellow of the Royal College of Surgeons and became the President of the Medical Board in Bombay.They had four children as far as I know which I list below and he died at Harrow Road in London on the 3rd of January, 1860 aged 73 years.
John Grenfell Moyle born Penzance in June 1824.Capt of 10th Bengal Native Infantry died on board, Genghis Khan on passage home from India January 1858. Louisa Georgina Mary Moyle married February 1862 at Rutnogharror (not sure about this spelling) Bombay, to George W.R.Campbell, superintendant of Police and Commandant of Rutnogharror. Henry Richard Connor Moyle of the Bombay Artillery, retired as Colonel, married Mary Agnes Morris. Lydia Le Mesurier Moyle married 27th April 18...(can't read this) at St. Mary's, West Brompton to Willian George Mc.Clure, M.D.
Hope you see this message and get in touch if you think there may be a connection, maybe Charles Augustus Moyle was another child or something, not sure?
Also I see in the Collectanea Corubiensis, County of Cornwall. Boase. MOYLE, Charles Augustus. Second Liet. Bombay staff corps. 1839; Lieut-Col in 1841. Capt. in 1852, Major in 1861, Lieut - Col. 1865., Col.in 22 Dec,1870, Commandant Assurghur., died Poona, Bombay 28th Dec, 1877. His 5th daughter Kate Louisa married 9th August, 1877 at St. Paul's Church, Poonah to Walter Charleton Hughes, executive engineer.
Also MOYLE, Grenfell, of the Bombay army married Elizabeth eld. daughter of Frederick James Ross.