For Him: I like the sound of the name "Renis" (no, it does not rhyme with penis. I'm sure you could spell it multiple ways. It, in my head, rhymes with Venice) His nickname could "Renny".
Yeah. I'm liking the sound of this more and more. Renny & Leva.
The girl reminds me of Audrey in Atlantis... So names that could work for her: Nora, Cecily, Genny (Genevieve).
For the boy: Aaron seems popular... also Matt or Lucas.
The girl Evangeline
Girl:Sharpe (pronounced sharp)