Definition: A proper name that aptly describes the occupation of the person, especially by coincidence.
(courtsey http://en.wiktionary.org/wiki/aptonym)

Came across this word while reading Freakonomics a while back and whoa... looky at this. Can you think of as many aptonyms as those cabinet members: Spellings - Education; Gates - Defense; and Rice - State (heavy-duty diplomacy with the Chinese?). See if you can help me find others: http://www.whitehouse.gov/government/cabinet.html

Seeing is believing.