Unique middle name for boy

Georgia

I want my son to have two middle names as I have 3 and his father has 2. I've always known I want George in memory of my dad, its also my brothers middle name the male version of my name. I always assumed the father would want to pick a name with significance to him for a middle name but he doesnt seem too bothered.

So im wondering if you lovely ladies can suggest some unique names with nice meanings.

For example I like River or Autumn for girls but I'm not sure about them for boys