JAMES, adopted from French, is properly the Bearnais (SW France) form of
Old French-Medieval French _Jacques_, Early Modern French-French _Jacques_:
for anterior etymology, JACOB. Its pet-forms _jemmy_ and _jimmy_ are
slang (original cant) names for a burglar's short crowbar. (_Eric
Partridge, A Dictionary of the Underworld_, 1950)

SHIVER (1), noun and verb -- a fragment, to break into fragments, whence
SHIVEREENS (-een = the Irish diminutive -in);

-- From ORIGINS: A Short Etymological Dictionary of Modern English, by
Eric Partridge