Shakespeare's primary source for "Henry V", as for most of his chronicle histories, was Raphael Holinshed's "Chronicles"; the publication of the second edition in 1587 provides a "terminus post quem" for the play. Edward Hall's "The Union of the Two Illustrious Families of Lancaster and York" appears also to have been consulted, and scholars have supposed that Shakespeare was familiar with Samuel Daniel's poem on the civil wars. An earlier play, the "Famous Victories of Henry V" is also generally believed to have been a model for the work.