"Mr. Sprague points out that a fourth child, David, was baptized at Braintree on 23: 4: 1691 (23 June 1691). This is in the printed Braintree baptisms [New England Register, vol. 59], but was overlooked by three investigators of the Spencer family, including the present writer, apparently because the names in this entry are entirely omitted from the index of that volume of the Register, what became of the son David, we do not know, if indeed he survived; …"