It is common to find surnames similar to Garallh. This is because many times the surname Garallh has undergone mutations.
Errors in writing, voluntary changes by the bearers, modifications for language reasons... There are many reasons why the surname Garallh may have undergone changes or modifications, and from those modifications, surnames similar to Garallh may have appeared, as we can see.
Discerning whether the surname Garallh or any of the surnames similar to Garallh came first is not always easy. There are many reasons that could have led to the surname Garallh being written or pronounced differently, giving rise to a new, different surname Garallh with a common root.