Murray defeated Novak Djokovic 6-4 7-5 6-4 to become the first British winner of the men's singles title at the All England Club since Fred Perry in 1936.
The Scot's family and friends have lived through the highs and lows with him and had to watch 12 months ago as he sobbed through his on-court interview after losing in the Wimbledon final against Roger Federer.
It was very different on Sunday, with Murray's parents, girlfriend Kim Sears, coaching team and friends able to celebrate with him as followed in Pat Cash's footsteps and climbed up to the player box.
Murray said it would take a while to sink in, and dad Willie agreed.
"He's made history," he said. "From a little gangly boy from Dunblane, it's just ridiculous.
"You saw him a few years ago, he had nothing on his bones, but he's worked very hard and that's what he's achieved. It's just incredible. I'm absolutely delighted."
Murray was one of the world's top juniors and won the US Open boys' singles title aged 17, but his dad did not expect anything like the success his son has gone on to have.
"You always want your children to do well, obviously," he said. "He was getting better and better but you just thought, 'Oh that's good' and moved on to the next tournament. It just grew from there.
"We never thought he was going to be terrific at it. We thought he was okay, but things improved as he got into the professional ranks."
Although yesterday's match was straight sets, it lasted more than three hours and there were plenty of tense moments.
Not least among those was the final game where Murray was 40-0 up only for Djokovic to fight back and force three break points before the Scot finally took his fourth match point.
There were no nerves from Willie, though, who said: "I was loving it.
"I just felt it was a great experience. You've got to embrace it. And I think on occasions like that, he's being trying so hard to embrace it and he's done it. It was fantastic.
"It's an incredible achievement. And I thought he did it in a very professional manner as well. No histrionics.
"Maybe the last game was the only part of it where you felt a bit nervous for him but I think the rest of the match he was very positive.
"The crowd were fantastic. It was lovely to hear all that."
It was an extra special moment for newsagent Willie, who was not in New York to see Andy lift the US Open trophy.
"I didn't make New York unfortunately but these things happen," he said. "I'd been to a few of them but it didn't happen for him the times I was there. But I've been here now and that's terrific. It's very special."
Willie felt his son's success in New York helped him gain extra belief.
He said: "There was a bit more of a swagger about him maybe, and nothing wrong with that. He had a bit more confidence and I think that's helped him through."
It is easy to see why Murray is so grounded, with Willie unable to resist teasing his son about dropping the lid of the Wimbledon trophy on court.
Willie joked he was happy Andy had not dropped him when they embraced afterwards, adding: "Andy's always been like that, he's pretty clumsy. But they can't hold that against him."
Mum Judy is a more demonstrative presence in the Murray support camp and she revealed what was going through her mind as her son tried to win the dramatic final game.
She said: "I was thinking, normally when you're 40-0 up and serving, there's a very high chance you're going to win that game, and then suddenly he was a little bit tentative, which is totally understandable, and before you knew it it was deuce, and then Djokovic had the break points.
"Some of the points that they both played in that last game were just outrageous, and he just managed to keep his composure and get there in the end. It was a fantastic match and I'm absolutely thrilled for him."
Murray paid a special tribute to coach Ivan Lendl, who had wanted to win Wimbledon so badly during his playing career but twice lost in finals.
Judy praised Lendl's influence on her son, saying: "On the big occasions, to have somebody with you who's been there and experienced finals of slams and knows what it feels like to prepare for one, and just what it feels like as a player the days before and the moments before you go out on the court, is so important
"He's made a really big difference to Andy in terms of the emotional control on the court and I think that's helped Andy to play his best tennis for longer periods of time. We all owe him a lot."