Career
In 1566 he published a work entitled the ‘Pedegrewe of Heretiques, wherein is truely and plainely set out the first roote of Heretiques began in the Church since the time and passage of the Gospel, together with an example of the offspring of the same. The work was prepared as a reply to the ‘Hatchet of Heresies’ (Antwerp, 1565), an anti-Lutheran pamphlet, translated by Richard Shacklock, of Trinity College, Cambridge, from the De origine haeresium nostri temporis of cardinal Stanislaus Hosius, bishop of Chełmno and Warmia. Barthlet, scandalised by Shacklock"s contempt for the doctrines of the Reformation, tried to show that all Roman Catholic doctrines were tainted by heresies traceable to either Judas Iscariot or Simon Magus.
His table of heretics is long, and includes such obscure sects as ‘Visiblers,’ ‘Quantitiners,’ ‘Metamorphistes,’ and ‘Mice-feeders.’ A letter from a John Bartelot to Thomas Cromwell, dated 1535, revealing a scandalous passage in the life of the prior of Crutched Friars in London, is printed from the Cottonian Mississippi. in Wright"s ‘Letters relating to the Suppression of Monasteries,’ p.
59 (Camden Social) A John Bartlet was vicar of Stortford, Essex, from 23 February 1555-1556 until 5 March 1560-1561. ‘One Barthlett, a divinity lecturer of Saint Giles", Cripplegate,’ was suspended by Bishop Grindal on 4 May 1566.
lieutenant is probable that these notices refer to the author of the ‘Pedegrewe,’ whose name was very variously spelt.