nelson (n.) Look up nelson at Dictionary.com
type of wrestling hold, 1875, apparently from a proper or surname, but no one now knows whose.
Presently, Stubbs, the more skilful as well as the more powerful of the twain, seizes the luckless Jumper in a terrible gripe, known to the initiated as the Full Nelson. ["Lancashire Recreations," in "Chambers's Journal," April 24, 1875]