Lea & Perrins has claimed that Sandys encountered a precursor to Worcestershire sauce while in India with the East India Company in the 1830s, and commissioned the local apothecaries to recreate it, eventually leading to its popularity in England.
Born Lord Marcus Hill, Sandys was a younger son of Arthur Hill, 2nd Marquess of Downshire, and Mary, 1st Baroness Sandys, daughter of Colonel the Hon.
The following year he assumed by royal licence the surname of Sandys in lieu of Hill.
Lord Sandys married Louisa, daughter of Joseph Blake, in 1837.
He died in April 1863, aged 65, and was succeeded by his eldest son, Augustus.