E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A poet in the reign of Henry IV. Justice Shallow says he saw Sir John Falstaff, when he was a boy, break Skogans head at the court gate, when he [Sir John] was a crack [child] not thus high. (2 Henry IV., iii. 2.)
Scogan? What was he?
Oh, a fine gentleman, and a master of arts
Of Henry the Fourths times, that made disguises
For the kings sons, and writ in ballad royal
Ben Jonson: The Fortunate Isles (1626).
John Skogan. The favourite buffoon of the court of King Edward IV. Scogins Jests were published by Andrew Borde, a physician, in the reign of Henry VIII.