I need last names

So! In my novel there's these four characters who run away from home. Their parents are immortal and designed their own world and the children end up travelling to this world because they know their parents abandoned it. But for their protection, they need to change their surnames.

I'll give a bit of information about each one and you can see what you can come up with.

  1. Ishani Savita Harte

Harte is the surname she already legally has. She's Hindi so maybe her new surname could be more Hindi leaning. The specific region she ends up hanging around is pretty wealthy and has very formal/designer surnames too. Her mother is the immortal to handle time.

  1. Parvati Artemisa Singh

Singh is the surname she already legally has. She's Hindi-Greek so her surname could be either but more leaning towards Greek as it's common knowledge that blends in better in the world they end up going to. Her mother is the immortal to handle creativity and her dad is a sun god.

  1. Astoria Gisela Hull

Hull is the surname she already has. She's German-Scottish so her surname could be either but Gaelic would better fit into the standards of the world she ends up going to. Her father is the immortal to handle control and her mother is the immortal to handle transformation. Her family is very high-end and perfectionists.

  1. Safire Theia Velez

Velez is the surname she already has. She's Greek so her surname would be better Greek. Her father is the immortal to handle animals and her mother is a goddess of immortality. Her aunt is the immortal to handle nature. It's pretty like she ended up in the nature region because she ends up dating their queen.

Any new/fake surname suggestions are appreciated! Thanks.