Plowden was born about 1836 in Horry County, SC, a son of Richard and Mary Tillman Green.
The 1860 census for All Saints, Horry, SC shows 27 year old Plowden living with 15 year old Ann Rebecca Green.
Originally a Corporal in Company A, Tucker's Cavalry. He enlisted at Georgetown on January 8, 1862. Detached on Waccamaw Neck January - September 3, 1862, present September - April 1863, elected 3rd Lieutenant of Company B on April 8, 1863 and was on that roster when it became Company F, 7th SC Cavalry. Present May - December 21, 1863, furlough of indulgence December 21, 1863 - January 19, 1864; present January - August 1864. On August 16, 1864, Plowden was wounded at Deep Bottom by a minie ball which mangled the four fingers of his right hand. He was at Jackson Hospital August 18 - 27, 1864. He left the hospital on furlough to Fair Bluff, NC on about August 27, 1864. Upon his return about September 25, 1864 he continued to serve with the company until he was admitted to Receiving and Wayside Hospital with typhoid fever on January 26, 1865. Plowden died on February 5, 1865. His effects contained a pocketbook with $620.00 in currency and a bundle of clothes that were valued as worthless.