You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: "OUCH"! 
Clue: In Ancient Egyptian inscription, this oval figure held the names of royal personages

Answer: cartouche


Question: Category: 19th CENTURY PEOPLE 
Clue: This hero was a sailor before joining the cause of Italian unity in the 1830s & trading blue & white for red

Answer: garibaldi


Question: Category: ESOTERIC KNOWLEDGE 
Clue: When his friend became Pope in 1623, he thought he'd be allowed to discuss his heliocentric theory

Answer:
galileo