Green’s Dictionary of Slang

1. a sweetheart.

c.1862		J.W. Rabb letter q. in Southwestern Historical Quarterly (1987) 91:2 194: You wrote me such a good long letter [...] The boys all thought it was from my jularky [...] I wood rite to my goolarky, but I han't got one good way to rite and nothing good to rite on.
1869		Highland Wkly News (Highland Co., OH) 26 Aug. 1/4: I am composed of 26 letters [...] My whole is what a young lady told her jew-lark.
1863		J. Stuart q, in J.H. Maxwell Perfect Lion (2011) 108: See here, young man, I am going to break up all this jularky business. You have been gallivanting aabout long enough.
1875		M. Thompson Hoosier Mosaics 78: ‘She’s my jewlarker,’ said he. ‘Your what?’ ‘My sweetheart.’.
1884		J.C. Harris Mingo 166: They wuz jewlarkers thar frum ever’-where’s, an’ they lookt like they wuz too brazen to live skacely .
1889		Dodge City Times (KA) 11 July 3/4: A butter-fly dude of Cimarron calls [...] quite often to see his ducky-jewlarker.
1890		DN I 230: jewlarky [...] sweetheart. ‘I’m going to see my jewlarky’ .
1908		L.W. Payne Jr ‘Word-List From East Alabama’ in DN III:iv 324: jewlarker, n. [...] a beau, a lover.
1939		T.J. Farr ‘The Language of the Tennessee Mountain Regions’ in AS XIV:2 91: jew larker. Beau.

2. a dandy.

1908		L.W. Payne Jr ‘Word-List From East Alabama’ in DN III:iv 324: jewlarker, n. A person of fine dress, manners, etc.
1979		Maledicta III:2 165: jewlarker n Dandy or dude, origin obscure; also to jewlark and jewlarkie.