Historically, has it been used as a first name? It sounds like a surname
It is a first name- there have been a few famous Grover's in history including American president Grover Cleveland. I guess it is sort like a surname in the same way Baxter is.

I just love the sound of it and love the nature connection, but also the funky nicknames. I think it suits a grown man too- but maybe that's just me

Hmm...

My H will take some convincing anyway!

Nameberry have picked it as a soon to be popular 'trendy' name choice.