Sir John Byron (1488–1567) was an English nobleman, politician, and knight of the Tudor era.
Sir John lived at Colwick in Nottinghamshire, before being granted Newstead Abbey in the same county by Henry VIII of England on 26 May 1540.
He was a trusted adviser to Henry VIII, and was at court most of his life.
[2] Byron married twice: firstly Isabel Lenington, by whom he had no issue and secondly Elizabeth Costerdine, the daughter of William Costerdine of Lancashire, and also the widow of George Halgh of Halgh, Lancashire, with whom he had one daughter and three sons, including John Byron, who was knighted by Queen Elizabeth I of England and his great-grandson became the first Baron Byron.
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