Cassily: WDYT?

Cassily is a common Irish surname where I live. Similar to [name]Cassidy[/name], do you think this could work for parents seeking seeking a more feminine sounding surname for their daughter’s fn (like [name]Kendall[/name], [name]Reagan[/name], etc.)?

I wouldn’t personally use it, but I think it could work. Thoughts?

To me it sort of sounds made up, and also like “Castle-y”.

I’m curious to see what others think though.

I like [name]Cassidy[/name] better.

Cassily sounds super-made up and is kinda an ugly name anyway. [name]Cassidy[/name] is way better than Cassily, and [name]Cassidy[/name]'s also a kinda dumb fn.

Help me please