For the sake of transparency of my POV's:

King Alexander III Valian & Alexander IV Valian are at the imperial capital.

William Valian (who will be lord-regent in his father's absence) will be in Ebonheart, Xandria.

Alexia & Ethias Valian will be in Rianis, Tellaria.

I haven't decided on any other POV's ATM.