Sir John Oldcastle of Martyrs". Oldcastle was also a minor character in the early Elizabethan history play the "Famous Victories of Henry V" (c. 1586?), which is generally thought to have been one of Shakespeare's sources for his plays on Henry IV and Henry V. The genesis of "Sir John Oldcastle" is crucially linked to the fact that when Shakespeare's "Henry IV" plays premiered on stage in 1597–98, the character Sir John Falstaff was called Sir John Oldcastle. This is indicated by abundant external and internal evidence. The change of names, from "Oldcastle" to "Falstaff," is mentioned in seventeenth-century works by Richard James
Portraits of Shakespeare only 15. Another example is the "Flower portrait", named for its owner, Sir Desmond Flower, who donated it to the Shakespeare Museum in 1911. This was once thought to be the earliest painting depicting Shakespeare, and the model for the Droeshout engraving. It was shown in a 2005 National Portrait Gallery investigation to be a 19th-century fake adapted from the engraving. The image of Shakespeare was painted over an authentic 16th-century painting of a Madonna and child. In 1849 a death mask was made public by a German artist, Ludwig Becker, who linked it to a painting which, he claimed,