Re-Reading some random chapters from ASOS and I noticed something I thought interesting.
Lady Olenna 1st compares her son to a puff fish and says
"My son ought to take the puff fish for his sigil, if truth be told. He could put a crown on it, the way the Baratheons do their stag, mayhap that would make him happy. We should have stayed well out of all this bloody foolishness if you ask me, but once the cow's been milked there's no squirting the cream back up her udder. After Lord Puff Fish put that crown on Renly's head, we were into the pudding up to our knees"
For me this immediately brought to mind Lord Butterwell because of the cow reference and their efforts in crowning a new king. While I recognize the many differences such as Butterwell did not have a daughter end up marrying into the royal family and I suppose Daemon had a (somewhat) better claim than Renly but both are really ridiculous and just envious.
But then I looked at the similarities, both Tyrell and Butterwell were hand of the kings despite being incapable and overall "oafs" and both decided to crown a king that was "Gallant, charming, very clean and knew how to smile" and overall just made fast friends easily.
So I guess in this situation Mace Tyrell would be Butterwell and Renly would be Daeron. I'm not trying to blow anyone's mind obviously I just thought that was interesting and I'm more worried for the Tyrells as a whole than ever before.