Rokeby Venus been cited as sources of inspiration for Velázquez. The nude Venuses of the Italian painters, such as Giorgione's "Sleeping Venus" (c. 1510) and Titian's "Venus of Urbino" (1538), were the main precedents. In this work, Velázquez combined two established poses for Venus: recumbent on a couch or a bed, and gazing at a mirror. She is often described as looking at herself on the mirror, although this is physically impossible since viewers can see her face reflected in their direction. This phenomenon is known as the Venus effect. In a number of ways the painting represents a pictorial departure, through
Thomas de Rokeby in 1407 and again in 1411. During his first term as High Sheriff Henry Percy, 1st Earl of Northumberland marched into Yorkshire against Henry IV of England and was stopped at Knaresborough by Thomas de Rokeby and a local levy. The two factions met again at the Battle of Bramham Moor where Rokeby was victorious and Percy killed. A grateful king awarded Rokeby the manor of Spofforth, previously the property of the Percys. He later served in the army of Henry V of England in France. He fought at the Battle of Agincourt in 1415, was present throughout most of