Who, or what, is the son of peace?

Luke 10:6 And if the son of peace be there, your peace shall rest upon it: if not, it shall turn to you again.

This is not referring to someone known as "peace jr."

Also, son is not capitalized, so it is not referring to The Prince of Peace.

However there are other similar titles:

Acts 4:36 And Joses, who by the apostles was surnamed Barnabas, (which is, being interpreted, The son of consolation,) a Levite, and of the country of Cyprus,

That's not because Barnabas' dad was named "consolation".

Then there is also:

Mark 3:17 And James the son of Zebedee, and John the brother of James; and he surnamed them Boanerges, which is, The sons of thunder:

Again, that's not because Zebedee was also known as "thunder".

So, going back to Luke 10:6, who, or what, is "the son of peace"?