Grove Lord?

[Lady89]

Could some one tell me what book the “Grove Lord” is in?
I know I have it’s stats but I can’t remember what book they are in.

Also Grove Lords and Thorn-spawn are one of my favorite monsters but I can’t find a lot of lore on them so if you have any cool/ uncommon info I’d love to hear it.

 

[tuxgeo]

Could some one tell me what book the “Grove Lord” is in?
I know I have it’s stats but I can’t remember what book they are in.

Also Grove Lords and Thorn-spawn are one of my favorite monsters but I can’t find a lot of lore on them so if you have any cool/ uncommon info I’d love to hear it.

Not in any book: that's homebrew territory according to dandwiki.

 

[Lady89]

I would have sworn it was in one of the Monster Manuals