John Kersey the elder

[1] He was son of Anthony Carsaye or Kersey and Alice Fenimore, and was baptised at Bodicote, near Banbury, Oxfordshire, on 23 November 1616.

At one time he was tutor to the sons of Sir Alexander Denton of Hillesden House, Buckinghamshire.

They were both future public figures (Sir Edmund Denton, 1st Baronet as a Member of Parliament for Buckingham, as his father had been, and Alexander Denton as a judge, as well as MP for Buckingham after Edmund).

To his pupils Edmund and Alexander Denton he dedicated his first and principal original work, The Elements of that Mathematical Art, commonly called Algebra, in two folio volumes, dated respectively 1673 and 1674.

Both John Wallis and Collins expected much of this work and on its publication it became a standard authority.