Aurelia (nickname Reia)...?
Aurelia Seren (golden star 🌟)
Aurelia Arwen
Aurelia Ffion
Aurelia Eira
Aurelia Eirlys
Aurelia Rhosyn
Aurelia Celyn
Open to other Welsh suggestions... DH is Welsh and our son has a Welsh middle name. I'm English though so need something I can pronounce, I think I've got my head round all of the above (broadly).