be known for与 be known of ,,,be known to,,

Question

be known for与 be known of ,,,be known to,,,,,be known before 都是什么意思，或根本没有这个语句

Answer 1

be known to 是对于某人或某个圈子来说，这个人很出名，比如说，在文学界里，莫言很出名，就可以翻译为Mo Yan is known to the literature circle.
be known as 是某人因某个职位而出名， 比如 Obama is known as the first black president of the USA.
be known for 为某人因某事而出名，比如Shakespeare is known for his dramas.

追答

be known of/before好像没有这两个搭配

Answer 2

以…出名