How Do You Memorize a Name?

When memorizing names. How do you remember the spelling. So for example, how do you remember that it is allison with one L instead of two L's or Catherine with the C instead of Catherine with a K. Yeah, this is one of the most common mistake that I make. This is the spelling with this like when I see the name or it has the spelling that I'm comfortable with so Catherine,. Like for me Catherine is with a C the most common Catherine are we see, but when it comes with aK.