Meriadoc Brandybuck was a hobbit of the Shire, He is a Brandybuck but also half Tookish through his mother. He is best friends with Frodo Baggins and first cousins with Peregrin Took. The hobbits of Buckland were different from others in that they were fond of boats, and some could swim. Before the events of the Lord of the Rings he was a respected hobbit of Brandy Hall, and he knew of the Ring’s existence having seen Bilbo use it to avoid the Sackville Bagginses. He was greatly involved in Frodo’s conspiracy to leave the Shire, including finding him a hideout home in Crickhollow and using his knowledge of the paths to escape unheeded. He helped lead the party through the Old Forest, and with them was captured by Old Man Willow. Rescued by Tom Bombadil, and captured again in the Barrow Downs by the Wights - and following Frodo’s call to Tom rescued again. Here he received a Barrow Blade, which to a man was simply a dagger. It was forged in Westernesse which gave it ancient power. In Bree he was attacked by a Black Rider but not injured, he was rescued by Nob. He accompanied the hobbits to Rivendell, where he was then appointed as a member of the Fellowship Of The Ring, for his cunning and loyalty to Frodo. He had to be carried by Aragorn in the failed attempt to pass Caradhras. At the entrance to Moria he was credited with helping Gandalf remember the pass through the Doors of Durin. In Lothlorien he was gifted a silver belt from Galadriel. During the Skirmish at Amon Hen Merry and Pippin were captured by the Orcs, after Merry had slew a few goblins. They were spared because the orcs’ orders were to capture halflings, in pursuit of the Ring. Outside of Fangorn Forest they escaped during a battle between the Orcs and the Riders of Rohan. Their journey through Fangorn included Merry and Pipping drinking the Ent-Draught, making them the tallest hobbits in legend. In Fangorn they met Treebeard and accompanied the Last March of the Ents, which engaged in the destruction of Isengard. Upon reuniting with The Three Hunters and the Rohirrim he rejoined the remnants of the Fellowship. Here he was separated from Pippin, and wanting to contribute to the war effort swore fealty to Theoden of Rohan. He was made a squire in a ceremonial sense. As they marched to Gondor to aid Minas Tirith he was denied the ability to fight as he was not big enough to ride a horse. However a knight named Dernhelm took him upon his horse, and he went to the Battle of Pelennor. During the Battle the Witch-King scared Merry’s horse, causing him to fall, however he remained next to the duel between Dernhelm and the Witch-king, fighting over the body of Theoden. Dernhelm reveals herself to be Eowyn, but is almost defeated by the Nazgul, until Merry uses his ancient sword to stab the Witch-king down the back, undoing his armor and he pierced the Ringwraith’s ethereal form, but by doing this he is gravely injured by the Black Breath. He is healed by Aragorn after the battle. After the destruction of the Ring he returned to the Shire and lead the hobbits in the Battle of Bywater, ensuring success and a reconquest of the Shire. He became the Master of Buckland, married a Bolger, and had no children. He visited Gondor with Pippin where they both died peacefully and were buried in the King’s Tomb, next to King Aragorn Elessar.
“You can trust us to stick to you through thick and thin - to the bitter end. And you can trust us to keep any secret of yours - closer than you keep it yourself. But you cannot trust us to let you face trouble alone, and go off without a word. We are your friends Frodo. Anyway: there it is. We know most of what Gandalf has told you. We know a good deal about the Ring. We are horribly afraid - but we are coming with you; or following you like hounds.” - Merry speaking for the hobbits and their loyalty after revealing they have known about Frodo’s plans. Fellowship of the Ring, A Conspiracy Unmasked.