In the past, there was no concept of official spelling. Do not rule out that a record is for your person just because their name is not spelled the way you think it should have been. In the Netherlands, spelling of surnames should have been fixed since 1811, but errors occurred even later.
We tend to think of the written word as the canonical version, but in the past it was the spoken word. The written version was just a derivative. And don’t forget that many of our ancestors were illiterate and not the ones doing the writing. Even if there was a “correct” spelling of their name, they may not have known it. The recordkeepers just wrote what they thought they heard. Accents and language bariers can cause many creative spelling variations.