Green’s Dictionary of Slang

1. to make someone into a victim.

1607		R. Abbot Defence of the Reformed Catholicke pt 2 502: Who would thinke that M. Bishop [...] should be so simple a man, as that his Maister Bellarmine could gull him, and gudgeon him with so vaine a tale?
1613		E. Hoby A counter-snarle for Ishmael Rabshacheh 65: I was loath such rare creatures [i.e. ‘Ladies’] should be ouer gudgeoned .
1832		Satirist (London) 8 Apr. 119/2: Among the flat-fish of Crockford's [...] Thomas Read Kent Kemp, the M. P. for Lewes, and Lyne Stephens, appear the most gudgeonable.

2. to render oneself gullible, to become a victim.

1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.