Brother for Kai

Would love some suggestions. our last name starts with an F.
[name]TIA[/name]!

I love the idea of another nature name with [name]Kai[/name]. [name]How[/name] about:

[name]River[/name]
[name]Rio[/name]
[name]Wade[/name]
[name]Shaw[/name]
[name]Linden[/name]
[name]Ash[/name]
[name]Oren[/name]
[name]Rowan[/name]
[name]Samson[/name]
[name]Forest[/name]
[name]Knox[/name]