Ahaaaa!
Legate got it. The answer is indeed Gloin.
Pretty good on the explanations but a couple of things to clear up.
Angry - as he fought with Oin when trying to light the fire in the rain.
White party hood, ninth to arrive at Bag End
No instrument mentioned for Gloin
Yep Gloin brought the torches for Bilbo
And of course Gimli's dad!!
Oh, the Gates of Doom etc- the Battle of Azanulbizar (or Nanduhirion if you prefer) where the dwarves beat Azog's orcs, but only at a terribly high price. Gloin fought there even though he was just 19 (very young for a dwarf).
All yours!!!