This is, ahem, a continuation of a previous post on the continuators of certain Puritan works for those interested in such trivia.
Jeremiah Burroughs' Exposition of Hosea
Jeremiah Burroughs died before completing his exposition of Hosea, but it was completed by his close friends, Thomas Hall (see below) (Hosea 13.12-16) and Edward Reynolds (Hosea 14).
Zacharius Urinsus' Exposition of the Heidelberg Catechism
David Pareus completed the commentary of Zacharias Ursinus on the Heidelberg Catechism after Ursinus' death.
William Ames' Fresh Suit
Thomas Hooker assisted William Ames in writing A Fresh Suit Against Human Ceremonies in God's Worship and wrote an advertisement and preface for the work after Ames died.
Fisher's Catechism, an exposition of the Westminster Shorter Catechism, was the product of James Fisher, Ebenezer Erskine and Ralph Erskine. Ralph died (November 6, 1752) prior to the publication of the first edition (February 1753) and Ebenezer died soon thereafter (June 2, 1754) while James (d. September 28, 1775) continued to expand the work (apparently writing the whole second part of the exposition as well as contributing to the first part, according to one source) as he notes in the advertisement to the third edition.