Claude Ashley Charles Ponsonby
- Born: 16 Aug 1859, Rutland Gate, LON
- Christened: 10 Sep 1859, All Saints, Knightsbridge, MDX
- Marriage: Haller Gross Horwitz on 28 Jan 1891 in All Saints, Ascot, BRK
- Died: 3 Feb 1935, Riverside House, Church St., Staines, MDX
- Buried: 7 Feb 1935, Staines Cemetery, MDX
Noted events in his life were:
• Census: Pupil at Lambrook School, 1871, Winkfield, BRK.
• Education, 1873-1878, Eton College, Eton, BKM.
• Education: Trinity College, 1879-1881, Cambridge University, CAM.
• Census: Undergraduate, 1881, Cambridge, CAM.
• Census: Living on own means, 1901, Kensington, MDX.
Claude married Haller Gross Horwitz, daughter of Orville Horwitz and Maria Rives Gross, on 28 Jan 1891 in All Saints, Ascot, BRK. (Haller Gross Horwitz was born on 11 Dec 1872 in Baltimore, MD, christened in Jan 1873 in Grace Church, Baltimore, MD, died on 2 Feb 1932 and was buried on 4 Feb 1932 in St. George's, Paris, FRA.)