Answer:

WALLY

Answer	Crossword Clue
WALLY	Beaver's brother
WALLY	"Leave It to Beaver" brother
WALLY	One of the Cleavers

WALLY	Astronaut Schirra
WALLY	Nickname for a Duchess.
WALLY	Actor Cox.
WALLY	Famous nickname.
WALLY	Nickname of Edward VIII's bride
WALLY	Cox of "Mr. Peepers"
WALLY	Memorable comic Cox
WALLY	Cox of early TV

WALLY	Beaver's nearest relative
WALLY	Boston Red Sox mascot
WALLY	The Beav's big brother
WALLY	'Leave It to Beaver' role
WALLY	Spaceman Schirra