A name of English origin meaning “old,” so when your little Alder asks what his name meaning is, you can tell him it’ll be much more pertinent in a few years. Like when he’s 30. Because that’s what old is when you’re a kid.
Famous people named Alder:
No notable bearers ... yet!
The alder tree is a species whose roots uniquely interact with bacteria to enrich the soil they're growing in, making a better forest environment for not only itself, but for all the other trees in the area. Awww, that's so sweet.