From Yoxford in Suffolk,[1] he was educated at St Catharine's College, Cambridge, of which he became master in 1675 in succession to John Lightfoot.
[3] In 1670 he had published anonymously a humorous satire entitled The Ground and Occasions of the Contempt of the Clergy enquired into in a letter to R. L., which excited much attention and provoked several replies, one of them being from John Owen.
[3] He gave amusing illustrations of the absurdity and poverty of the current pulpit oratory of his day, some of them being taken from the sermons of his own father.
These were written in their author's chosen vein of light satire, and John Dryden praised them as highly effective within their own range.
A Free Enquiry into the Causes of the very great Esteem that the Nonconforming Preachers are generally in with their Followers (1673) has been attributed to Eachard on insufficient grounds.