Marcus Vipsanius Agrippa was a renowned Roman general and close friend of Octavian (Augustus). Agrippa was consul first in 37 BC. He was also governor of Syria. As general, Agrippa defeated the forces of Mark Antony and Cleopatra at the Battle of Actium. Upon his victory, Augustus awarded his niece Marcella to Agrippa for a wife. In 21 BC Augustus married his own daughter. Julia, to Agrippa. By Julia, Agrippa had a daughter Agrippina, and three sons, Gaius, Lucius Caesar and Agrippa Postumus.

Main Roman Coin Book and Other References:

RIC = Mattingly, Harold    The Roman Imperial Coinage
BMC = Coins of the Roman Empire in the British Museum
RSC = Seaby, H A    Roman Silver Coinage
RCV = Sear, David R    Roman Coins and Their Values
Cr = Crawford, Michael    The Roman Republican Coinage
SB = Sear, David R    Byzantine Coins and Their Values
S = Coins of England and the United Kingdom
WW = Wildwinds.com (reference & attribution site)