Sir John Thorold, 12th Baronet
Sir John Henry Thorold, 12th Baronet was a British Conservative Party politician.
He was son of Sir John Charles Thorold, 11th Baronet and succeeded him in 1866, inheriting Syston Park.
He was elected at the 1865 general election as a Member of Parliament for the borough of Grantham in Lincolnshire, but did not stand again in 1868.
He was appointed High Sheriff of Lincolnshire for 1876–77. and was a Deputy Lieutenant of the county.
He married Hon. Alexandrina Willoughby, daughter of Baron Middleton, on 3 February 1869, and they had five children: