No one knows where or when Ursa comes from, probably not even himself. He once he painted a picture of his home for Darius, with mountains and caves. MacLeod suggested that Ursa was growing up alone in the woods. Although he can speak, he does not talk much. .
By 1634, Ursa was living in a cave in a French forest. The farmers of the surrounding villages took him for a demon, because they could not kill him. He was known among them as the "beast with no name." When the peasants hunted him in April 1634, their hunt was interrupted by Duncan MacLeod. He recognized Ursa as an Immortal. Ursa was killed in battle, and MacLeod lead the villagers to believe he was buried in a manner which would prevent his return. MacLeod took Ursa to the Abbey of St. Gobain, so that he would be safe on holy ground.
Ursa, who had a strong feeling for the beauty of things around him, worked as a gardener at the Abbey. The monks knew of his immortality, but protected him as one of Gods creatures and taught him to sing. Sometime between 1634 and the French Revolution, Darius visited the Abbey of St. Gobain.
Around the time of the French Revolution, the abbey of St. Gobain was demolished. Ursa fled to the catacombs under Paris, as it was similar to the caves he used to live in.
In 1993 he was still living there. Because he loved singing, he felt drawn to the opera. He fell in love with the singer Carolyn. When she had an argument with her manager, Ursa killed him because he thought he was going to hurt Carolyn. Carolyn tried to manipulate him into killing her rival, Jenny Harris. But while he captured Jenny, he refused to kill her as Carolyn wanted. When Carolyn accused Duncan MacLeod of trying to kill her, Ursa attacked him. He fought with a large, crescent-shaped light weapon, possibly a garden tool. Their struggle shifted to the roof of the Opera, where ultimately Ursa fell off the roof. Dunan goaded Carolyn into admitting that she manipulated Ursa and never cared for him. Carolyn ran off, and was struck and killed by a car. Ursa goes to her and holds her body. Duncan tells Ursa she is dead.
MacLeod brought Ursa to another monastery, the Abbey of St. Bernard. There Ursa was observed by Father Jean-Patrick, until at least July 1994. And he could once again focus on his singing.