A Pleasant Commodie of Faire Em, the Miller's Daughter of Manchester, with the Love of William the Conquerour (Unabridged‪)‬

By Shakespeare? Almost certainly not, but 1) it was found in a volume labeled Shakespeare in the library of Charles II, and 2) C. F. Tucker Brooke included it in his 1818 Shakespeare Apocrypha as one of 14 possible plays that could be attributed to Shakespeare. At any rate, it is a decent comedy with William the Conqueror in disguise, and Fair Em not what she appears to be either.