Background
Cornwallis was born in Linton, Kent, the second son of Fiennes Cornwallis, 1st Baron Cornwallis and his wife Mabel Leigh.
Cornwallis was born in Linton, Kent, the second son of Fiennes Cornwallis, 1st Baron Cornwallis and his wife Mabel Leigh.
He was educated at Eton and the Royal Military Academy Sandhurst.
During the First World War he served with the Royal Scots Greys on the general staff in France and Flanders. He was later Honorary Colonel of Thames and Medway Heavy Regiment, Royal Artillery. Keen on cricket, he played the First-class cricket for Kent between 1919 and 1926.
He succeeded his father in the barony in 1935 and was Chairman of the Kent County Council between 1935 and 1936.
Lord Cornwallis was married twice. They had two children:
Honorary
Rosamond Patricia Susan Anne Cornwallis, 15 May 1918 – 3 September 1960
Fiennes Neil Wykeham Cornwallis, 3rd Baron Cornwallis
They had no children. Cornwallis was the grandson of Fiennes Cornwallis.
The great-grandson of Charles Wykeham Martin.
The 2nd great-grandson of James Mann, 5th Earl Cornwallis. The 3rd great-grandson of James Cornwallis, 4th Earl Cornwallis. The 4th great-grandson of Charles Cornwallis, 1st Earl Cornwallis.
The 5th great-grandson of Charles Cornwallis, 4th Baron Cornwallis.
The 6th great-grandson of Charles Cornwallis, 3rd Baron Cornwallis. The 7th great-grandson of Charles Cornwallis, 2nd Baron Cornwallis.
The 8th great-grandson of Frederick Cornwallis, 1st Baron Cornwallis. And the 9th great-grandson of Jane Cornwallis, and Elizabeth Richardson, 1st Lady Cramond.
His ancestors include Edward Cornwallis, Frederick Cornwallis, Charles Cornwallis, 1st Marquess Cornwallis, William Cornwallis, Philip Wykeham Martin, and Charles Cornwallis, 2nd Marquess Cornwallis.