Other men there were to whom the boy may well have carried letters from Marcombes or his Genevan friends. There was Dr. Theodore Diodati, the London physician—brother of Dr. John in Geneva,—who knew a great many people in London; and there was Samuel Hartlib, the naturalised German, the merchant-philanthropist who knew everybody and whom everybody knew. And there was Milton himself, a friend of the Diodati family in Geneva, and a friend also of Dr. Theodore Diodati and Mr. Hartlib. Dr. Theodore Diodati lived in the parish of St. Bartholomew the Less, not far from Milton’s house in Aldersgate Street, and Hartlib was living in Duke’s Place, Aldgate. He was a man with many hobbies and interests, and a large correspondence. He conducted, in fact, “a general news agency,” and must have been as well known in Geneva as in London from his connexion with Durie and the great project of a union of all the Protestant Churches of Europe, and for his friendship with Comenius, and his active part in the scheme which the English Parliament was then itself taking up of a reform, on Baconian lines, of the English Universities and Public Schools. It is certain that Hartlib was one of Robert Boyle’s earliest friends in London; that Hartlib and Milton were intimate, and that Milton had first addressed his _Tract on Education_ to Hartlib. And it is difficult to believe that Milton was unknown—by name at least—to Robert Boyle. For Milton had been in Geneva in the summer of 1639, just before Frank and Robyn went there. Milton’s great friend Charles Diodati was the son of Dr. Theodore in London and the nephew of Dr. John of Geneva; and when Milton passed through Geneva on his way home from his Italian tour Dr. John had been very hospitable to him. Milton had been an honoured guest at the Villa Diodati, and it is supposed that he heard there the news of Charles Diodati’s death. Even if Robyn had not met Milton at Sir Henry Wotton’s table when Milton dined at Eton, he may well have heard in Geneva all about Charles Diodati and John Milton, and the _Epitaphium Damonis_—the Latin poem that Milton wrote on his return home, in memory of his dead friend. And it is probable he knew of _Comus_, acted by the Bridgewater family, and of _Lycidas_ also, and Milton’s friendship for Edward King, the brilliant young Irishman, whose relatives in Ireland must have been well known to the Boyle family. Robyn may well have read the _Epitaphium Damonis_ in the Villa Diodati; and in the house of the Italian teacher and refugee, Count Cerdogni, he may have looked through the famous autograph album in which Milton had written the words (of which Robyn would certainly have approved)— “If Vertue feeble were, Heaven itself would stoop to her.”