A postcard sent from a north Pembrokeshire town has arrived in Swansea 121 years later, sparking a global mystery and a long lost family reunion.

The card was sent by Ewart Davies, who was visiting family in Fishguard on August 3, 1903.

He posted it to his sister Lydia’s home in Craddock Street, Swansea, where it turned up 121 years later.

The front of the postcard features a wintry scene depicting a stag standing over a frozen tree stump, with snowy mountains and a starry sky in the background.

The postcard is adorned with a King Edward VII stamp, fitting perfectly with the 1903 postmark.

The postcard reads: "Dear L. I could not, it was impossible to get the pair of these (thought to be the postcard). I am so sorry, but I hope you are enjoying yourself at home.”

Ewart goes on to say that he hasn’t blown all his money in Fishguard’s shops.

“I have got now about 10 shillings pocket money not counting the train fare so I'm doing alright," he writes.

The note ends with a request to "Remember me to Miss Gilbert + John with love to all.”

It is understood that 13-year-old Ewart was spending his summer holidays at his grandfather’s house in Fishguard when he wrote the postcard to his sister Lydia, who was known to collect them.

The postcard arrived at the Craddock Street address, now the headquarters of Swansea Building Society, last month sparking a social media search for more information abut the Davies family of Craddock Street.

"It turned up completely out of the blue on Friday,” said Henry Darby, marketing and communications officer at Swansea Building Society.

“The postman came to the door as normal with lots of letters regarding mortgages and savings, and as one of the managers was sorting through it, this postcard dropped onto the table – no envelope, no note, just as it was.

"The address is correct – we are still 11 (and 12) Cradock Street – but it's 121 years later than expected. It's wild, actually; a little bit spooky. The stamp is King Edward, who was king from 1901 until 1910, and you could tell right away from the handwriting and the language that it was very much of the time.”

A spokesperson for Royal Mail said that it was likely that the postcard was put back into the mail system rather than being lost in the post for over a century.

“When an item is in our system, we are under obligation to deliver it to the correct address,” she added.

After the building society shared the story on social media multiple family members coming forward to share their stories and connect the dots of their shared history.

This led to several of Lydia and Ewart's descendants meeting for the first time including Nick Davies, Ewart’s grandson; Lydia’s great-nieces, Helen Roberts and Margaret Spooner, as well as Lydia’s great-granddaughter, Faith Reynolds.

"It’s like a family reunion, where the only connection you have is a common ancestor dating back to over a hundred years ago," said Nick, 65, who lives in West Sussex.

Henry Darby added: “For over a century, Swansea Building Society has been dedicated to serving the community, and this story reaffirms that commitment.

“Without the involvement of the community, this piece of history might never have been uncovered, and a long-lost family might never have been reunited.

“We would like to thank everyone who has helped unravel this mystery and reunite Ewart and Lydia’s family.”