Sourcing docs for individuals and their families often identify surname spelling variations that are unique to specific docs. eg birth record says Roark, census says Rowork, Roach, Rorke, death cert/headstone say Roork, etc. Understanding that each family group develops a surname spelling consensus, it is important to appreciate that certain source docs will not be identified if the spelling variants are not recognized. Another example occurs when a transcriber misspells...