The play has often been attributed to Heywood; the normally cautious
W. W. Greg regarded it as "undoubtedly Heywood's" — though the rarely cautious
F. G. Fleay demurred. Some scholars have dated the play as early as 1594; others have favored a date toward the end of that decade. The records of theatre manager
Philip Henslowe show that
Henry Chettle and
John Day were working on a play about Jane Shore in May 1603 for
Worcester's Men, the company with which Heywood was associated at the time. A play on Jane Shore was popular in the first decade of the 17th century, and is mentioned in
The Knight of the Burning Pestle (1607) and
Pimlico or Run Red-Cap (1609). In Part 1 of
Edward IV, Act III scene ii, is a three-part song about the
Battle of Agincourt that strongly resembles
Michael Drayton's
The Ballad of Agincourt — and Drayton was a regular writer for Henslowe c. 1600 and frequently collaborated with Chettle and others. All of these facts and factors, taken together, suggest that
Edward IV was composed by Heywood, perhaps with other Henslowe house dramatists, and perhaps revised over a span of years by various hands. ==Performances==