Thomas de Grey, 2nd Earl de Grey

Thomas Philip de Grey, 2nd Earl de Grey, 3rd Baron Grantham and 6th Baron Lucas, KG, PC, FRS (8 December 1781 – 14 November 1859), known as The Lord Grantham from 1786 to 1833, was a British Tory statesman of the 19th century. Born Thomas Philip Robinson, his surname was Weddell from 1803 and de Grey from 1833.

De Grey was the eldest son of Thomas Robinson, 2nd Baron Grantham and his wife, Mary, a daughter of the Jemima Yorke, 2nd Marchioness Grey and younger sister of the Amabel Hume-Campbell, 1st Countess de Grey. Prime Minister Lord Goderich was his younger brother. He succeeded his father as third baron in 1786, and became the sixth baronet Robinson of Newby in 1792. In 1833 he succeeded his aunt as second Earl de Grey according to a special remainder and also inherited the Wrest Park estate in Silsoe, Bedfordshire. In 1798 he was admitted to St John's College, Cambridge, graduating MA in 1801. He became second Earl de Grey and Baron Lucas of Crudwell in 1833.

He was made Privy Counsellor in December 1834 while holding office as First Lord of the Admiralty till April 1835, and a Knight of the Garter in 1844. He was colonel-commandant of the Yorkshire Hussars, a part-time Yeomanry Cavalry regiment, for over forty years and was appointed yeomanry aide-de-camp to William IV and held similar position under Queen Victoria. Lord Grantham was nominated as Lord Lieutenant of Bedfordshire in 1818, an office which he held until his death. He served as Lord Lieutenant of Ireland from September 1841 to July 1844. During his time in Ireland he disagreed with Peel's religious conciliation of Ireland, claiming that economic conciliation was a greater priority.He called for more legislation focused on Ireland whilst Peel pursued economic legislation aimed at benefitting the UK as a whole.

On the founding of the Institute of British Architects in London in 1834 he was invited to become its first president remaining so till his death in 1859. The institute received its Royal Charter in 1837 becoming Royal Institute of British Architects in London; he was also the first president of the Royal Architectural Museum. Earl de Grey was also a fellow of the Royal Society from 1841, a fellow of the Society of Antiquaries, and served as one of the New Buckingham Palace Commissioners from 1848. Besides remodelling his London home at No.4 St James's Square (now the Naval & Military Club) he designed the new Wrest House inspired by French architecture at his Wrest Park estate in Bedfordshire between February 1833 and October 1839, assisted by James Clephan, and maintained the Park adding a number of decorations and statues.

Lord de Grey married Lady Henrietta, daughter of William Cole, 1st Earl of Enniskillen, in 1805. They had two daughters – Ann Florence and Mary Gertrude. His wife Henrietta died in 1848. Lord de Grey survived her by eleven years and died in November 1859, aged 77.

He was succeeded in the barony of Lucas of Crudwell by his daughter, Ann, who was Countess Cowper by marriage, as well as Baroness Lucas in her own right.

His other titles passed to his nephew, George Robinson, 2nd Earl of Ripon.