IOGEAR makes HDMI wireless transmitter/receivers.
I have the single version, about $190.
The one that supports 5 inputs X 2 TVs is about $300.
Tripp Lite sells a 4 X 4 switch box for about $400. Not wireless but cables.
Splitters are cheap. I have a 1 X 2 for less than $15.
I use the wireless transmitter for the outside tv and would move the transmitter to the bedroom if I needed it.
The bedroom has OTA and thats good enough usually.
Add a DVD player wherever you need it.
My friend's new 2017 motorhome has HDMI everywhere.
You can use the component out (RCA JACKS 5 WIRE) for one tv freeing up the HDMI for another.