John Byron (died 1567)
He 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 a son, Sir John Byron (died 1600), who was knighted by Queen Elizabeth I of England and his great-grandson became the first Baron Byron.