Here are a few possibilities:
* A made-up name: Some parents choose unique, invented names for their children.
* A variation of another name: It could be a variation of a name like "Tylen" or "Tyler," but with a slightly different spelling.
* A name from a specific culture or language: It's possible the name has a meaning in a less common language or culture.
To find a possible meaning, you could:
* Ask the person who bears the name: The best way to know the meaning is to ask the person themselves.
* Research online: Search for the name "Tylyn" on websites like Behind the Name, Baby Names Pedia, or Meaning of Names.
It's important to remember that names can have personal significance, and sometimes the meaning is simply what the family or individual wants it to be.