When beginning your genealogy journey, it’s wise to decide early on which version of a surname you’ll use consistently. This is especially important if you rely on tagging systems—such as Evernote—for organizing your research.
For example, in my own family I have relatives with the surname appearing as Skaggs, Scaggs, and Skegs. Early on, I chose to tag every related note simply as “Skaggs” to keep things uniform. Otherwise, I’d have to remember to search three different tags every time I wanted to find information on that family line—a needless complication.
Wikipedia: List of legally mononymous people