croesus

from WordNet (r) 3.0 (2006)

Croesus
    n 1: last king of Lydia (died in 546 BC)
    2: a very wealthy man

from The Collaborative International Dictionary of English v.0.48

Croesus \Cr[oe]"sus\ (kr[=e]"s[u^]s), prop. n. [L., fr. G.
   Kroi^sos.]
   A king of Lydia who flourished in the 6th century b. c., and
   was renowned for his vast wealth; hence, a common appellation
   for a very rich man; as, he is a veritable Cr[oe]sus.
   [1913 Webster]

from Who Was Who: 5000 B. C. to Date

CROESUS

an ancient John D. Rockefeller, who became wealthy
without trusts, the Supreme Court, or the stock market.