Green’s Dictionary of Slang

sorrel-pate n.

[the reddish colour of SE sorrel]

a red-headed person.

[UK]B.E. Dict. Canting Crew n.p.: Sorrel-pate, red Hair’d.
[UK]Grose Classical Dict. of the Vulgar Tongue.
[UK]Lex. Balatronicum.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.