Here are some possibilities:
* Combination: It could be a combination of names like "Mary" and "Lynn," or "Mae" and "Lynn."
* Variation: It could be a variation of names like "Madelyn," "Maelyn," or "Mellyn."
* Modern Invention: Many names are created or popularized in recent times, without a specific meaning.
Ultimately, the meaning of "Maelynn" is up to the individual who chooses it. They might choose it for its sound, its connection to other names, or for its unique, modern feel.