Yes, you can absolutely name your children Claude and Céleste. Names are a deeply personal choice, and parents have the freedom to choose names that they feel are meaningful and suitable for their children. Both Claude and Céleste are beautiful and timeless names with historical and cultural significance.
It's essential to consider your own preferences, cultural background, and any potential family significance when choosing names for your children. As long as the names you choose comply with any legal regulations or requirements in your country or state, you are free to select names that resonate with you and your family.