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07:30
"Clare, who is sleeping in the couch, is Mike's son" is OK. The relative clause adds additional information about Clare but is not important to identify the person.
@hbtpoprock I'm not sure the point here. Yes. The sentence is fine and you can omit "who is".
"The baby who is sleeping in the couch is Mike's son." doesn't need a comma since its relative clause is a defining clause"—I'm not sure the point here. But yes the sentence is correct and you can omit "who is".

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