"Okay Barney, now we know! ... We have Percy to remember all of ordinances and clauses of the ministry."
—George Weasley comparing Barney to Percy.
Barney Weasley (b. 1971) was the first son of Elias and Elaine Weasley, eldest brother of Fabian Weasley, husband of Ivone Weasley and father of Digory and Douglas Weasley. He attended Hogwarts School of Witchcraft and Wizardry from 1982 to 1989 and was possibly sorted into the Gryffindor house, if it was, he was roommate of his cousin Bill. The name of Barney may have served as inspiration for the fictitious name given to Harry Potter during the wedding of Bill and Fleur: Barny.
Early life and Hogwarts
Barney Weasley grew up traveling with his family in his father's Volkswagen Beetle for much of his childhood. At that time, Elias did not have many plans for the future and needed ideas for your journal of mechanics. Thus, Barney went to Hogwarts completing eleven years and possibly was sorted into Gryffindor, as all his ancestors of the Weasley family.
Bill and Fleur's wedding
In the summer of 1997, Barney once more returned to the Burrow, to serve as best man at Bill's wedding to Fleur Delacour. Barney was with his cousin when he danced with Fleur after the wedding ceremony. Barney clapped and sang while the two danced. When the wedding was broken up by Death Eaters in the wake of the fall of the Ministry of Magic, he was questioned alongside his family, but was safe.
After the War
At the end of the Second Wizarding War, Barney returned to travel with his parents, brother and, after some time, with his sister-in-law and wife, but even on the road he continued his obligations as an Obliviator.
Back to the Burrow
In 2018, with the death of Arthur Weasley, Barney and his family decided to stop traveling around the world and move permanently to the Burrow, former home of Elias. At the beginning of the vacation, the Weasley family arrived home aboard the flying Beetle of Elias, and stayed there. Upon learning that the old Ford Anglia of his uncle Arthur was still at the Burrow, and in good condition even needing repairs, Barney became interested in the car and is willing to pay any price for the flying automobile.
Barney is described as tall, almost the same size as his cousin Bill, but his legs were larger and more cumbersome than the other. His hair was short, just spread to seventeen millimeters from the left eyebrow. He wore a jacket and shoes color of hay, apparently secondhand.