Philip Melanchthon
He was born Philipp Schwartzerdt on 16 February 1497, at Bretten where his father Georg Schwarzerdt was armorer to Philip, Count Palatine of the Rhine. His birthplace, along with almost the whole city of Bretten, was burned in 1689 by French troops during the War of the Palatinate Succession. The town's Melanchthonhaus was built on its site in 1897.
Crypto-Calvinism
When Luther died in 1546, his closest friend and ally, Philipp Melanchthon, became the leading Lutheran theologian of the Protestant Reformation. He was by training not a theologian but rather a classics scholar, and his theological approach became more or less irenic both toward Catholicism and toward Calvinism, which was followed by his disciples called Philippists. Towards Reformed doctrine of eucharist this had become evident already in 1540, when Melanchthon had published another version of the Augsburg Confession ("Variata"), in which the article on the Real Presence differed essentially from what had been expressed in 1530. The wording was as follows:The altered edition was made the basis of negotiations with the Roman Catholics at the Colloquies of Worms and Ratisbon in 1541, and at the later Colloquies in 1546 and 1557. It was printed (with the title and preface of the Invariata) in Corpus Doctrinae Philippicum in 1559; it was expressly approved by the Lutheran princes at the Convention of Naumburg in 1561,
after Melanchthon’s death, as an improved modification and authentic interpretation of the Confession, and was adhered to by the Melanchthonians and the Reformed even after the adoption of the Book of Concord (1580). Also John Calvin signed it. Still it had no legal status given by Peace of Augsburg, which belonged to original version.