^Irons, E.A., “Isaac Johnson: A Memoir”, The Rutland Magazine and County Historical Record, 1908, Volume 3, Rutland Archaeological and Natural History Society, Chas. Matkin, 1908, p. 78. The date of his birth in sources varies widely: Irons notes that his mother died "a few days after giving birth a son who was named Isaac at his baptism on lst July, 1601, in St. John’s Church, Stamford—a family tradition states that Isaac was born at Clipsham".
^Anderson, Robert Charles. The great migration begins: immigrants to New England, 1620–1633. New England Historic Genealogical Society. Boston.
ISBN088082042X.
OCLC33083117.
^Irons, p. 86, notes that, "Most likely" he had gone to Charlestown for [a] Meeting, had died there and was buried with his wife at Salem. But so much romance has been woven round the original foundation of Boston that it is now very hard to ascertain the actual facts: yet it appears certain that Isaac Johnson however he may have visited the place and suggested its name never actually dwelt there and most certainly did not die nor was buried there."
^Morison, Samuel Eliot (1963). The founding of Harvard College. Cambridge, Mass.: Harvard University Press.
ISBN9780674314504.
OCLC18650219.
^Hubbard says “Among others that were at that time visited with mortal sickness, the Lady Arabella, wife of Mr. Isaac Johnson, was one who, possibly, had not taken the counsel of our Savior to sit down and count the cost, before she began to build. For, coming from a paradise of plenty and pleasure, which she enjoyed in the family of a noble earldom, into a wilderness of wants, it proved too strong a temptation for her; so that the virtues of her mind were not able to stem the tide of those many adversities of her outward condition, which she, soon after her arrival, saw herself surrounded with. For, within a short time after, she ended her days at Salem, where she first landed; leaving her husband, a worthy gentleman of note for piety and wisdom, a sorrowful mourner, and so overwhelmed with grief, that about a month after, viz. September 30, 1630, death carried him after her into another world, to the extreme loss of the whole plantation.”