There are a few well-known TV characters whose names some remember incorrectly, sometimes by misunderstanding or confusing familial relationships.
Two examples to start off....
Al Lewis' character on The Munsters is frequently referred to as "Grandpa Munster." But his surname, of course, is Dracula. (As once referenced by Lily when giving her maiden name to a job interviewer.)
Jethro on The Beverly Hillbillies is often heard referred to as "Jethro Clampett." But remember, he's Pearl's kid, and his surname is Bodine.
Others?
Two examples to start off....
Al Lewis' character on The Munsters is frequently referred to as "Grandpa Munster." But his surname, of course, is Dracula. (As once referenced by Lily when giving her maiden name to a job interviewer.)
Jethro on The Beverly Hillbillies is often heard referred to as "Jethro Clampett." But remember, he's Pearl's kid, and his surname is Bodine.
Others?