He graduated from St Catharine's College, Cambridge early in 1638, having been there about a year since matriculation, and having joined Gray's Inn in October 1637.
[2] Queenborough on the coast of Kent was a rotten borough in the fashion of the 17th century: one of its MPs would be nominated, by the normal convention, by the future Philip Herbert, 4th Earl of Pembroke, from 1616, as Constable of the Castle.
[4] When Charles I of England went to Nottingham in August 1642, to raise the Royal Standard—the event that marked the outbreak of the First English Civil War—Harrison accompanied him.
[6] Days later, he died of an injury caused by a fall with his horse, in Oxfordshire, in a skirmish with parliamentary forces under the Earl of Essex.
He was buried in Exeter College Chapel, according to his sister's memoirs; but in the church of St Peter the Great, according to the editor of the 1907 edition.