"Glóin was one of the thirteen companions of Thorin Oakenshield on the Quest of Erebor. A skilled fire-maker, he thought little of Bilbo Baggins at first, but gained a new respect for the hobbit by the quest's end. He has dwelt at the Lonely Mountain ever since. Glóin's brother, who also accompanied Thorin on his great quest, journeyed into Moria with their kinsman Balin but was never heard from again. Glóin fought with many of his kin at the Battle of Azanulbizar, despite his youth at the time. He can be seen at the warcamp at Amdân. [63.7N, 134.9W]
"After the rise of the Shadow in the East, Glóin and his son Gimli brought news to Rivendell of the Enemy's movements and sought the wisdom of Elrond Half-elven. Both attended the great Council of Elrond, where Gimli was chosen to become one of the nine members of The Fellowship of the Ring, whose task it is to bear the One Ring of Sauron to Mount Doom and cast it into the Chamber of Fire. Glóin, with his entourage, set about clearing the outcast Dourhands from the passes of the Misty Mountains, making safe the way from west to east." — lorebook
Glóin (Silver Deep Mine)
Glóin is first met briefly by new Dwarf characters at the Silver Deep Mine helping Thorin Oakenshield complete preparations for the expedition to the Lonely Mountain immediately prior to leaving.
Glóin (Misty Mountains)
Glóin is found at the camp bearing his name, in the Misty Mountains, not far from the passage to Rivendell Valley. Glóin is the father of Gimli, the hero to become from being chosen to travel with Frodo and the Company of the Ring.
Glóin is also found outside Goblin-town in Northern High Pass in the Misty Mountains. [21.4S, 5.9E]
-  Volume I, Book 5, Chapter 1: Into the Misty Mountains
-  Volume I, Book 5, Chapter 2: Troublesome Goblins
-  Volume I, Book 5, Chapter 3: The High Fortress
-  Volume I, Book 5, Chapter 4: The Key-stone
-  Volume I, Book 5, Chapter 5: The Last Refuge
-  Volume I, Book 5, Chapter 6: In the Steps of Evil
-  Volume I, Book 5, Chapter 7: Evil Tidings
-  Volume II, Prologue, Foreword: Sons and Fathers
After the fall of Mordor Glóin visits Erebor with some of Thorin Oakenshield's surviving companions.
Glóin (Ered Mithrin)
Glóin joins Dori as he searches for his brother Nori in Ered Mithrin
Glóin (Wells of Langflood)
Glóin travels south from Skarháld with Imák and Venko through the Wells of Langflood, coming eventually to the Beorning village of Limlók.
Glóin can be found on the upper level of the Keep of Annâk-khurfu, coordinating many of the efforts of the Gabil'akkâ.
Glóin (War of Three Peaks)
Glóin can be found in Zarkul-sulûn during the War of Three Peaks.