Spelling variations are very common, especially in older records. The most crazy-making cases of variant spellings I've seen are in 1600s New Netherland, where the record keepers often were writing down names from languages they didn't know anything about. When (for example) French and Scottish and could-be-Portuguese names were written by Dutch and English clerks, it's sometimes difficult even to tell if two spellings possibly could be the same name. But I've never seen Boring for Barnes!
Wikitree asks us to stick with one appropriately documented spelling for the LNAB. Other spellings can go in Other Last Names, separated by commas.