Major Sir William Lloyd (29 December 1782 – 16 May 1857) was a Welsh military commander, and was one of the first Europeans to ascend a Himalayan peak. He was born in Wrexham, the eldest son of Richard Myddleton Massie Lloyd of Plas Power, Bersham, a wealthy mercer (Welsh flannel, linen, wool and cloth dealer) and later, a banker, and Mary Bowey, the daughter of William Bowey (1725–1820), of Chester, Cheshire. He was educated at Ruthin School. In 1798, he obtained a commission in the army of the Honourable East India Company, and landing in India a year later, with the Rank of Lieutenant. He later became Captain in the Bengal Infantry, commanding the Residency Escort at Nagpore for 14 years. In 1814, he inherited the Bryn Estyn estate, Bieston, Wrexham, and other lands and property in Denb