Six months ago he was known only to his family and friends.
He was usually known to family and friends as Charles.
But a few were known to friends, and are remembered.
She had already made her position known to friends and neighbors.
He was always known to his family and friends as Graham.
During Jefferson's life the book's existence was known only to his friends and family.
He was known to his personal friends and family as, "Doc."
In later life, he was known to friends simply as "Van".
This event is only known to very close friends and family who own the winning horse.
Make it known to your friends, and you will oblige me.