Thomas Darcy was born in 1467 and was the only son, and heir, of Sir William Darcy (1443 – 30 May 1488) and his wife, Euphemia Langton, the daughter of Sir John Langton. He belonged to a family which was seated at Templehurst in Yorkshire.
In early life he served, both as a soldier and a diplomatist, in Scotland and on the Scottish borders, where he was captain of Berwick; and in 1505, having been created Baron Darcy, he was made warden of the east marches towards Scotland. In 1511 Darcy led some troops to Spain to help Ferdinand and Isabella against the Moors, but he returned almost at once to England, and was with Henry VIII. on his French campaign two years later.
For a short time Darcy defended Pontefract Castle against the rebels, but soonhe surrendered to them this stronghold, which he could certainly have held a little longer, and was with them at Doncaster, being regarded as one of their leaders.
Upon the dispersal of the insurgents Darcy was pardoned, but he pleaded illness when Henry requested him to proceed to London.
He may have assisted to suppress the rising which was renewed under Sir Francis Bigod early in 1537, but the king believed, probably with good reason, that he was guilty of fresh treasons, and he was seized and hurried to London.
Tried by his peers, Darcy was found guilty of treason, and was beheaded on the 20th of June 1537.
In 1548 his barony was revived in favour of his son George (d. 1557), but it became extinct on the death of George's descendant John in 1635.
Darcy's first wife was Dousabella Tempest, a daughter and heiress of Sir Richard Tempest of Ribblesdale, North Yorkshire and Mabel, daughter of Walter Strickland. They had three sons and a daughter.
Then he married Edith Sandys, a daughter of Sir William Sandys and Elizabeth Cheney. Their daughter Elizabeth Darcy married Sir Marmaduke Constable.
She was the daughter of Sir William Sandys and Elizabeth Cheney.
She was the daughter and heiress of Sir Richard Tempest of Ribblesdale.
