The fact that there was no unified spelling for the surname Gishkko when the first surnames were formed allows us to find many surnames similar to Gishkko.
Not all surnames similar to the surname Gishkko are related to it. Sometimes it is possible to find surnames similar to Gishkko that have a different origin and meaning.
Discerning whether the surname Gishkko or any of the surnames similar to Gishkko came first is not always easy. There are many reasons that could have led to the surname Gishkko being written or pronounced differently, giving rise to a new, different surname Gishkko with a common root.