Robert Recorde

Robert Recorde is famous for being a mathematician and doctor. He invented the equal sign (=).

Robert Recorde
  • 1530: He was admitted a Bachelor of Arts at Oxford University.
  • 1531: He was elected a Fellow of the College of All Souls, Oxford University.
  • 1533: He was awarded an Oxford license to practise medicine.
  • 1537: Left Oxford for Cambridge, where he started studying advanced medicine and supported the Protestant Reformation.
  • 1542: Cambridge University awards him a Medical Degree.
  • 1543: He publishes his first mathematical textbook, 'The Grounde of Arte'.
  • 1547: He publishes a medical textbook on uroscopy entitled 'The Urinal of Physick'.
  • 1553: He sent a letter to the Queen complaining about the charge of treason made against him by the Earl of Pembroke and accusing him of the same crime.
  • 1557: 'The Whetstone of Witte' is published, a work on algebra where the equal sign (=) was first used.
  • 1557: Ordered to pay the Earl of Pembroke £1,000 damages with costs in a court case against him.
  • 1558: Arrested and put in jail, to prevent him from fleeing abroad.

Place of Birth: Tenby, Pembrokeshire

Date of Birth: c. 1512

Date of Death: 1558

‘A happy man of genius, and famous for learning complex subjects. A polished and accurate writer, highly skilled in all the liberal arts and mathematical sciences.’ – Gordon Roberts, ‘Robert Recorde: Tudor Scholar and Mathematician’ (University of Wales Press 2016)