John Dury (1596 in Edinburgh – 1680 in Kassel) was a Scottish Calvinist minister and an intellectual of the English Civil War period. He made efforts to re-unite the Calvinist and Lutheran wings of Protestantism, hoping to succeed when he moved to Kassel in 1661, but he did not accomplish this. He was also a preacher, pamphleteer, and writer. Early life He was the fourth son of the exiled Scottish presbyterian minister Robert Durie; John was brought up in the Netherlands, at Leiden, attending the university there. He was in Cologne, at the Walloon Church, 1624-6, and subsequently at Elbląg (Elbing). He was a close associate of Samuel Hartlib, a native of Elbląg, whom he met there, and shared his interest in education. According to Richard Popkin, another key influence was Joseph Mede, from whom Dury took a method of scriptural interpretation; this interpretation has been challenged by recent research claiming that Dury developed his "Scriptural Analysis" before meeting with the works of Mede. While at Elbing he translated an anti-trinitarian work of Samuel Przypkowski into English. From 1628 Dury petitioned Gustavus Adolphus for help in the cause of Protestant unity. He spent much time from 1630 to 1661 wandering through Europe, working for ecclesiastical peace between Calvinists and Lutherans. Through an introduction from Hartlib, he also met Comenius, who spent some years in Elbing as well. Up to 1633, Dury had Anglican support from George Abbot. In that year, Abbot died and was replaced by William Laud, with whom Dury had a much more difficult relationship; Christopher Hill states Laud had no use for the efforts of Comenius, Dury and Hartlib to reunite Protestants. Dury was ordained in 1634, and went to Sweden, supported by 38 English Puritans. The networking of Dury and Hartlib in the 1630s brought them close to Oliver Cromwell, through Oliver St John (a relation by marriage, and friend) and the Godmanchester preacher Walter Welles, a neighbour. Dury then travelled widely in northern Europe, and was tutor to Mary, Princess of Orange in the Hague. He had a long though unproductive meeting with René Descartes in 1635; also in the Netherlands he was an associate of Adam Boreel and Petrus Serrarius, and an influential figure. In Civil War and Commonwealth England At a key moment in English and European politics, Dury in August 1641 published Concerning the Work of Peace Ecclesiastical, urging Protestants to unite