Ireland’s Olympic gold medal winner Daniel Wiffen has his sights set on further medals after his ‘unreal’ win last night, according to his identical twin brother.

Wiffen made history last night becoming the first Irishman to ever win an Olympic gold in swimming.

He stormed to gold in the Men's 800 Metre Freestyle final in Paris last night – with his time of 7:38.19 setting new Olympic, European and national records.

Speaking after the race, the 23-year-old said he had never been more nervous before a race – but hearing his twin brother Nathan shouting his name as he walked out, “calmed me down and really levelled my head”.

On Newstalk Breakfast this morning, Nathan Wiffen said his whole family is ‘buzzing’ after Daniel's win.

“I lost my voice maybe halfway through the race screaming for him,” he said. “So yeah, it was pretty unreal.

He said he can’t imagine how his brother was able to hear him over 80,000 screaming fans – but admitted, “I was screaming pretty loud”.

He said his family was out celebrating the win until late into the night last night.

“Everybody's buzzing,” he said.

“We all know he's got another event to come, so we're just looking forward to that as well.”

Ireland's Daniel Wiffen celebrates after taking gold at the Paris 2024 Olympic Games

Wiffen still has two other events to compete in at the games – the Men’s 1500m Freestyle and the Men’s 10km open-water swim.

Nathan said there is a strong chance of further medals.

“I know he prefers 1500m and the first race is out of the way so the nerves are hopefully gone,” he said. “All at the jitters you get.”

“So he’ll be more focused, maybe, for the 1500 but you know, he's never won Olympic gold before so who knows how he’s going to react in his brain and if he can refocus in.”

Daniel Wiffen (L) and Nathan Wiffen during an Olympics training session at the National Aquatic Centre in Dublin, 20-07-2024. Image: Seb Daly/Sportsfile

Asked if Daniel was nervous before last night’s race, Nathan said he was more excited than anything else.

“Your body plays tricks on you on these situations and you’ve just got to see if you can overcome it,” he said.

“That's just how it goes with being an Olympic champion, I guess.”

Nathan is a champion swimmer in his own right and the brothers remain training partners.

He said wins like last night make all the hard work and early morning worth it.

Team Ireland has now won two medals in the tournament so far - with Wiffen's success following on from Mona McSharry's bronze medal on Monday.