The 22-year-old spent six weeks on trial with the Glovers, having left Irish football at the tail end of 2012 while he stayed with best friend and Yeovil top scorer Paddy Madden and was only given his first start by Gary Johnson in January. And, having become a vital cog in Johnson's line-up, Dawson grabbed the opening goal in the 2-1 aggregate victory over Sheffield United on Monday to help Yeovil tee up a Wembley final with Brentford.
It capped a memorable weekend for the family after older brother Stephen started for Barnsley in their nail-biting clash with Huddersfield on the final day of the Championship season.
The midfielder played for 84 minutes as the Tykes stayed up in dramatic fashion meaning victory for the Glovers at the home of English football on May 19 would set up a Dawson derby next season.
"It has been brilliant," Kevin Dawson said when reflecting on a frantic 36 hours for the family. "I was so nervous for him, it was horrible.
"We were coming back from Sheffield (after Yeovil's first leg defeat) and it was a horrible feeling watching the scores and praying. Thankfully Palace beat Peterborough and Steve stayed up so that was unreal.
"I was delighted for him and he was saying over the phone that now it was my turn. I can't believe it but happily enough we are there."
He added: "I'd love a Dawson derby, but I don't think we can think about that yet - we have the small matter of Wembley first."
Should Town beat the Bees, they would be promoted to the second tier for the first time in their history, 10 years since they reached the Football League after 108 years in the non-league game. And Dawson is on cloud nine after a memorable afternoon, both personally and for his new employers.
"I've never been to Wembley before and I can't wait. Who knows how many of my family will be there, hundreds I expect! It means everything to the club. All season since I've come in all the gaffer has been saying is that we should believe and we can do something."