Green’s Dictionary of Slang

a blacksmith.

1611		Rowlands ‘A Shee-Devill Made Tame by a Smith’ Knave of Clubs 36: Smug would tremble like a leafe, / When she appear’d in sight.
1627		G. Peele Merrie Conceited Jests 4: We will goe drinke two pots with my Smug Smithes wife at Old Brainford.
1634		J. Howell Familiar Letters (1753) II 7 Oct. 366: Ale is thought to be much adulterated, and nothing so good as [...] Smug the smith was used to drink.
1653		Mercurius Democritus 2-9 Feb. 337: When Taylors they do honest prove, / or Smugg forgets his Ale / [...] / then Peace will Court Tom Dale .
1657		‘The Brewers Praise’ in D’Urfey Pills to Purge Melancholy (1719) III 24: When Smug unto the Forge doth come.
1664		C. Cotton Virgil Travestie (1765) Bk I 30: Full oft when Smug was blowing Bellows, / Would she be trucking with good Fellows.
1675		C. Cotton Scoffer Scoff’d (1765) 237: Just now, whilst Smug was Oxen shoeing.
c.1698		B.E. Dict. Canting Crew n.p.: Smug a Black-smith.
1709		N. Ward in Works I 133: You’re an impudent slut, cries the smug at his bellows [F&H].
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1809		G. Andrewes Dict. Sl. and Cant.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.