Andonárë was born in Himring of Beleriand in the 250th Year of the Sun, under Maglor’s and Maedhros’ banner. Soon after his birth, Glaurung ravaged Ard-galen, but was driven back to Angband, and there The Long Peace began. Despite his father, his mother was of a gentle soul, and from her Andonárë was taught both the art of jewels and kindness of heart. He was fathered by a fierce warrior, Veryasercë, an elder member of Host of Maedhros, a participant of every battle under the banner of the Noldor before, eventually choosing his fate under the red banner of Fëanor at Alqualondë, throwing many of his own race into the great and foaming sea.

A member of the Host of Maedhros, Andonárë grew tall, mighty and fierce. In those times his soul was bright, for there was a great peace across the land. Soon, his skills in jewelcrafting and engraving were recognized and in time he found himself in the company of the the Host's mastersmith, Tyëlcasamo, with whom he fostered a great friendship. The master of the crafting guild was impressed by Andonárë's skills in crafting besides his skills in combat. So he taught him the subtle and secret recipes, the true ways to master his craft. Alongside of the crafting skill they possessed, they shared common thoughts and philosophy. Besides a few others, Tyëlcasamo was his closest comrade, master and friend.

His training of war was quite successful, excelling considerably in various forms of combat, be it fist fighting, wrestling, jousting, dueling, taking part in tournaments and such events. The longsword, spear and shield was his choice of equipment. With the help of his master, they together smithed a dark shield for him, that would match with his armour, set with a small crimson gem through Andonárë's work. The master was happy and proud of how Andonárë had progressed in his skill. Not too later, his master also asked for a mastership for Andonárë, which was soon accepted by Maedhros.

It began when Morgoth broke the Siege of Angband and on a winter’s night he sent out many rivers of flame consuming Ard-galen, fleeing many Elves and burning Maglor’s horsemen alive. When the Dagor Bragollach began, Andonárë stood defence in the fortress of Himring with the host of Maedhros. They fought with fire, and sorrow and anger festered and lingered in Andonare’s heart, having bore witness to many of his kindred falling one by one. The fortress stood firm through the Dagor Bragollach, and many survivors from the surrounding regions, including Maedhros' brother Maglor and his scattered host, rallied there. In the battle the Orcs had taken the Pass of Aglon, but Maedhros reformed the defence forces in Himring, where Andonárë and his father stood fast. The great host marched upon the Pass, and retake there. In this fiery battle, Andonárë and his father fought to victory, but only one of them returned Himring once again. Andonárë's heart darkened, for losing Veryasercë, his father, and witnessing the death of thousands of his kinsfolk did not bring light within.

Nearly two decades later, Dagor Bragollach was followed by another war, Nirnaeth Arnoediad. The Noldor were scattered, both in army and land wise. Andonárë, now as an experienced warrior of great skill, took his place in the Union of Maedhros. They marched north to reclaim the former lands of Noldor. The Union first cleared Beleriand and Dorthonion of Orcs, where Andonárë performed great fight with no mercy and then gathered to assault Thangorodrim. Under Maedhros, the remainder of the Sons of Fëanor gathered. With Lord Caranthir, there were unusual and dark individuals led by a man named Ulfang, whom Andonárë never took a liking to. And for the evil deeds of Celegorm and Curufin, there was no help came from Thingol that day. The Prophecy of Mandos was coming true, the battle was begun. Many died; Elves, Men and Dwarves, and among the dead was Andonárë's former master of smithing, Tyëlcasamo. Andonárë grew fierce, hatred boiled his blood and he fought to kill. He never show mercy to those who surrendered, especially against Men from East.

Andonárë's success in combat was outstanding and he became a battle-proven warrior. With the order of Maedhros, Andonárë led a small party in the army  following the seven brothers to Doriath. He knew, what this was about, but the last thing he would do was disobey his Lords of great success and highness. His pride and honour was fulfilled against such honourable duty. Without a regret, he wore his armour and took up his weaponry. He led a small party of Noldorin elves as he was ordered, he carried a high, blood red banner onto his steed. They attacked at the realm in winter, and fought against their own race. The snow turned crimson and bodies littered the ground, and although they took their revenge, they couldn’t reach their first goal, The Silmaril was gone. Maedhros buried three of his brothers, and returned with nothing except the bloodied hands.

Little needs to be told of the disappointment at Havens of Sirion, with the surviving sons of Fëanor, Andonárë followed the escaped Silmaril, to the Sirion, the main river of Beleriand, emptied into the sea, in the northeast corner of Bay of Balar, and fought to put his own kin to the sword once again. Great slaughter, leaving only a few alive, and losing the precious Silmaril once again into the sea, this time where they couldn't follow, which is brought even more hatred to him against constant running, fool thieves who would meet the doom sooner or later. However, taking a part in such fierce slaughters and hardships, improved him greatly. Both in combat and mind, he had grown wise and well-versed warrior in arms.

Of the War of Wrath, once again Andonárë took his place under the banners of Maedhros and Maglor, but he was not aware of the forces from Valinor. He was amazed when he saw them. They marched together within the same host, the host of the Valar utterly destroyed the Orc armies of Morgoth, as well as most of the Balrogs. While the Three Houses of Men fought alongside the Valar and the Elven Host, there were many enemies crushed under the great sword of Andonárë. But also many other Men, evil, corrupted traitors, named Men from East, fought for Morgoth once again. Ever since, Andonárë is distrustful and hateful against mankind. Yet he believes he made them pay the price of treachery, for he slaughtered many of these men on the battleground.

​After the lands of Beleriand were wrecked and ruined, Andonárë left there for it was not the same land he was born to, and grew and loved. Instead of the green and peaceful Beleriand, the land was scattered, drowned with the blood of his kinsfolk, a place of hatred and treachery. So he departed, leaving his friends, brothers in arms, his kin behind; taking his armour, spear, sword and shield with him and his anger, hate and fire as well. Treachery, killing his own kind, passing of his family, his close friends was too much for him to take for nothing. So he moved on, rode over the ruins and mountains, at last, he reached the newly founded Kingdom of Lindon, in North he was able to find peace, seaward and westward he glared, but all he remembered was, hatred, blood and vengeance.