ivan — ("Ivan the Terrible") 1530–84, first czar of Russia 1547–84.
liven — to put life into; rouse; enliven; cheer (often followed by up): What can we do to liven up the party?
niven — David. 1909–83, British film actor and author. His films include The Prisoner of Zenda (1937), Around the World in 80 Days (1956), Casino Royale (1967), and Paper Tiger (1975). He wrote the autobiographical The Moon's a Balloon (1972) and Bring on the Empty Horses (1975)
