Raphael Henry sounds good to me.
Let's go with Emmeline for the girl and Theodore for the boy.
I'm not too partial to some of those names--Gaelle, Maelle, etc.
And let's go with Damian's MN as Rupert.
So Raphael Henry, Damian Rupert, Emmeline ________, and Theodore __________.
From the lists given, I like for girls (that'll sound good/okay): Sarah, Lucy, Chloe, Leah, Rachel, Jessica, Rebecca, Laura, Victoria, Maeve, Jasmine, Aoibheann, Hannah, Alexis, Samantha, Taylor, Brianna, Nicole, Katherine, Julia, Savannah, Danielle, Sierra, Cassandra.
For boys (that'll sound good/okay): Reece/Rhys, Brandon, Kieran, Paul, Scott, Peter, Gavin, Anthony, Stephen, Cormac, Callum, Noah, William, Ronan, Andrew, Patrick, Thomas, Marcus, Dalton, Jesse, Julian, Sebastian, Blake, Garrett, Bryan, Seth, Timothy, Nathaniel, Luke, Elijah, Isaiah, Aaron, Caleb, David.