well-known / well known

Crippen’s family is [color=red]well-known in the swimming world.

Is [color=red]well-known fine?
There isn’t a noun after [color=red]well-known, so isn’t “well known” correct?

You are correct. It’s a minor point, easily overlooked by news editors in their haste.

well-known is ok. It plays a role of adjective, so adjective after the verb is ok.

It is very nice that I took some information from “http://www.englishclub.com/grammar/adjectives-order_2.htm” to express my answer below.

An adjective can come after some verbs, such as: be, become, feel, get, look, seem, smell, sound
Even when an adjective comes after the verb and not before a noun, it always refers to and qualifies the subject of the sentence, not the verb.

-Your friend looks nice.
-It smells bad.

By the way, if Mr. Beeesneees is correcting this topic, then could you please glance my topic for help? The topic is “Adjustment Letter [Help to correct]” ^^. I appreciate your help.

Thank you, B.