Mark McConville, 41, was caught on camera jumping up and waving a Saltire while wearing a "See You Jimmy" hat, a Scotland strip and a kilt.
Images of Mr McConville, an engineer from Glasgow, have now gone viral after Luis Suarez all but ended England's dreams of World Cup victory.
Mr McConville's brother-in-law Paul Hamilton identified him on Twitter after a nationwide search began to track him down. Tweeting beneath a picture of Mr McConville, Mr Hamilton said: "This is my brother in law's brother! #hero"
Mr McConville is currently doing charity work in Brazil, donating old football strips to an orphanage in Sao Paulo.
His parents, Andy, 68, and Isabell, 66, from the south side of Glasgow, said they had recognised their son on the TV immediately.
Mrs McConville said: "I was watching it with my family and we were looking out for him as we knew he would be there. It happened that fast - the camera just goes round the crowd and then we saw him. Then one of my friends sent a photo of it to my son, and suddenly it was everywhere."
She added: "I suppose it is a bit odd - but he always probably thought he would be on the television."
His father said: "He's not an anti-English guy or anything like that, it would have been more just about the banter."
Asked if Thursday night's stunt was typical of Mark, he said: "He's not a shy guy, let's put it that way. He's like any guy really when their going to watch a game - quite happy to put on the tartan gear and let everybody know he's Scottish.
"And being a single guy there's nobody telling him not to go."
Mr McConville, an avid Scotland fan and engineer for Mercedes AMG, decided to support Uruguay when Scotland failed to reach South Africa in 2010.
Childhood friend Jim Johnston, said: "He could not have picked a better game. This just absolutely sums Mark up."