John Weever of a religious tone, "The Mirror of Martyrs" and "An Agnus Dei". "The Mirror of Martyrs or The Life and Death of ... Sir John Oldcastle" may have been part of a backlash. In his preface Weever calls it the "first trew Oldcastle", perhaps on account of the fact that Shakespeare's character Falstaff first appeared as "Sir John Oldcastle". Weever's work is influenced by John Bale's 1544 biography of Oldcastle, which presents him as a proto-Protestant martyr. In the fourth stanza of this long poem, in which Sir John is his own panegyrist, occurs a reminiscence of Shakespeare's "Julius Caesar"
John Oldcastle military career Oldcastle became a trusted supporter of Henry, Prince of Wales, later to become King Henry V, who regarded Sir John as "one of his most trustworthy soldiers". Oldcastle was a member of the expedition which the young Henry sent to France in 1411 in a successful campaign to assist the Burgundians in the Armagnac-Burgundian Civil War. Lollardy had many supporters in Herefordshire, and Oldcastle himself had adopted Lollard doctrines before 1410, when the churches on his wife's estates in Kent were laid under interdict for unlicensed preaching. In the convocation which met in March 1413, shortly before the