Sir William Heron, Knight, of Ford, b. Nov 1400, d. 1425, knighted Feb 1421/2, Justice of Northamptonshire 1422, Sheriff of same 1425. [Ancestral Roots]
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Sir William Heron, Knight, of Ford, b. 1400, d. 1425. [Magna Charta Sureties]
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Note: Both AR and MCS are probably wrong (above) about William being "of Ford". CP, the senior source in this line (AR and MCS use CP as a source) states that this branch of the family was NOT of Ford, until Elizabeth Heron m. John Heron of Ford, reuniting the two branches.
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4- SIR WILLIAM HERON, son and heir, aged 3 months in January 1400/1. In 1407, being then aged 7 years, he was in ward to Robert Ogle. He was of full age and already a knight in February 1421/2, and did fealty to the Bishop of Durham for his lands in Norhamptonshire on 14 September 1421. He was appointed a justice in Northumberland in 1422, and was Sheriff of the county at the time of his death in 1425. He married (dispensation 13 January 1411/2, the parties being related in the fourth degree) Anne, daughter of Sir Robert OGLE. He died s.p.m., 1 September 1425. [Complete Peerage VI:487-8, (transcribed by Dave Utzinger)]
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Note: I rechecked, and AR definitely has him Sheriff of Northamptonshire, while CP has him Sheriff of Northumberland. I would tend to believe that AR is wrong because William was of a Northumberland family; however CP does say he was involved in Northamptonshire in 1421. I will leave it as AR has put it until I find another source that can resolve the descrepancy.