“Galaiya” (also written similar ways like Gadhaiya etc.) is mainly a surname / family name, not a religion.

• Some people with this surname are Jains (especially in certain business/Vaniya / Oswal-type Jain communities).
• Some people with the same or similar surname may follow other religions.
• Jainism is a dharma (religion); a surname or gotra does not automatically make a person Jain. A person is Jain if they follow Jain principles and identify as Jain, not just by family name.

So: Galaiya can belong to Jain families, but it is not only Jain, and not everyone with that surname is necessarily Jain.