Nag A horse. This is an example of n of the article joined to the following noun, as in the word newt = an
ewt. (Danish and Norwegian, og; Anglo-Saxon, eoh or eh; Latin, eq[uus]; Dutch, negge.) Taylor (1630)
has naggon, as-

“Wert thou George with thy naggon,
That foughtest with the draggon.”

Shakespeare's naunt and nuncle are mine-aunt and mine-uncle.

I wondered where "nuncle" came from