George Manners, 12th Baron de Ros

Sir George Manners, 12th Baron de Ros of Helmsley (died 27 October 1513, at Tournai, Belgium) was an English nobleman of the reign of King Henry VII of England.

George Manners was the son of Eleanor de Ros by her marriage to Sir Robert Manners. He inherited the barony of de Ros from his uncle, Edmund de Ros, 11th Baron de Ros of Hamlake.

He married Anne St. Leger (14 January 1476 – 21 April 1526). She was a daughter of Sir Thomas St. Leger and Anne of York. His mother-in-law was the second child and eldest surviving daughter of Richard Plantagenet, 3rd Duke of York and Cecily Neville. She was an older sister of Edward IV of England, Edmund, Earl of Rutland, Elizabeth of York, Duchess of Suffolk, Margaret of York, George Plantagenet, 1st Duke of Clarence and Richard III of England.

Their son was Thomas Manners, 1st Earl of Rutland, who inherited the barony.

George Manners owned a medieval manuscript copy of a chanson de geste, Les Voeux de paon (The Vows of the Peacock) by Jacques de Longuyon, that is now New York Public Library, Spencer MS 9. He wrote his name on a flyleaf of the manuscript, f. i v, which may be seen online at the Digital Scriptorium, [1].

The 12th Baron de Ros was buried at St. George's Chapel, Windsor.