Green’s Dictionary of Slang

a simpleton, a fool.

1514		Skelton Agenst Garnesche iii line 88: No seche a nody polle A pryste for to controlle.
1521		Skelton Speke Parott line 317: There is none that your name woll abbrogate Then nodypollys and gramatolys of smalle intellygens.
1532		T. More Confutation of Tyndale Answer in Works 709/1: So foolyshe, that a verye nodypoll nydyote myght be ashamed to say it [OED].
1582		Stanyhurst Of Virgil his Æneis IV: What niddipol hare brayne Would scorne this couenaunt?
1598		R. Bernard (trans.) Terence, Andria iii i: I now at length hardly understand [...], whorson nodipol that I am [N].
1653		Urquhart (trans.) Gargantua and Pantagruel (1927) I Bk I 103: The bunsellers or cake-makers [...] did injure them most outrageously, calling them [...] jobbernol goosecaps, foolish loggerheads, flutch calf-lollies, grouthead gnat-snappers, lob-dotterels, gaping changelings, codshead loobies, woodcock slangams, ninnie-hammer fly-catchers, noddiepeak simpletons, turdy-gut, shitten shepherds, and other such like defamatory epithets.
1653		Mercurius Democritus 21-28 Sept. 585: The young Lasses are now all become so mad of Marrying, that all the Ladds is Nodnol-shire will not be half sufficient numbers to find them Husbands.
1754		J. Gay Rehearsal at Goatham Dramatis Personae: Women. [...] Miss Noddipole.
1812		‘Hector Bull-us’ Diverting Hist. of John Bull and Brother Jonathan 65: She called him prating gabbler, liquorish glutton [...] codshead booby, noddipeak simpleton, ninnihammer gnatsnapper, and various other names.
1915		M.G. Hayden ‘Terms Of Disparagement’ in DN IV:iii 205: noddipole, -pate, -peake [...] simpleton.