Harris was the second son of John Harris (1564- June 1623) of Lanrest in Cornwall, Recorder (or Steward[2]) of the Borough of West Looe in Cornwall ( established in 1574[3]) and MP for West Looe in Cornwall in 1614,[4] by his wife Joane Harte, daughter and sole heiress of Robert Harte of Plimston in the parish of Stoke Climsland in Cornwall.[5][6] His younger brother was Robert Harris (d.1655), Major General of the King's infantry in Plymouth, buried at Tywardreath in Cornwall, where he "lies interred under a marble monument"[7] inscribed as follows:[8]
"In Memory of Robert Harris, Esquire, sometime Major-Generall of his Majesties forces before Plymouth, who was buried here under, the 29th day of June, 1655, and of Honnor Harris, his sister, who was likewise heer under-neath buried, the 17th day of November, 1653".
"Loyal and stout, thy crime this, this thy praise," "Thou'rt here with Honour laid, tho' without Bayes."
In 1630 he married Elizabeth Johnson (d.1637), a daughter of Emorb Johnson of Bridge in the parish of South Petherton in Somerset[12] and of Bonham in Wiltshire. She died in childbirth in 1637, having produced one surviving son:
^Vivian, Lt.Col. J.L., (Ed.) The Visitations of the County of Devon: Comprising the Heralds' Visitations of 1531, 1564 & 1620, Exeter, 1895, p.447,pedigree of "Harris of Radford"