A play which has been incorrectly attributed to William Shakespeare entitled "Cromwell" contains the character of Sir Ralph Sadler. 

Click here to read the play.

This first appeared in quarto in 1602 with the following publication information: "The True Chronicle Historie of the Whole Life and Death of Thomas Lord Cromwell. As it hath beene sundrie times publikely Acted by the Right Honorable the Lord Chamberlaine his Servants. Written by W.S. Imprinted at London for William Iones, and are to be solde at his house neere Holburne conuict, at the signe of the Gunne. 1602". 

This was added to the third folio in 1664 and titled "The History Of The Life And Death Of Thomas Lord Cromwell."