c.shivering-Jemmy (see quot. 1860). Also a dialect name for Briza media, also known as shivering-grass (Britten and Holland).
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the mind > possession > poverty > mendicancy > [noun] > beggar > who goes nearly naked
shallow cove1839
shivering-Jemmy1860
1860 J. C. HottenDict. Slang (ed. 2) 212Shivering-Jemmy, the name given by street folk to any cadger who exposes himself, half naked, on a cold day, to obtain alms.