The family of a war hero were delighted back in 2007 when they learned a new road would be named after the former navy man.
The sign was finally installed two weeks ago, but the family were disappointed to find out it had been mis-spelled.
The surname of Jack Audas, a Stamford man in his 20s who died in 1942 while serving on the aircraft carrier HMS Hermes, had mistakenly been spelled Audus.
Jack’s nephew Algie Audas, 54, of Ayr Close, Stamford, said: “Some of the roads on the new estate were named after troops who lost their lives.
“This was one of the last to be finished so we had waited years for the sign to go up.
“My daughter spotted it and told me they had got the name wrong.
“It’s a great shame it has been mis-spelled. You would have thought they would have done their homework.
“I know it’s an unusual name but I can’t see why they didn’t look into it to find out who he was and get the spelling right.
“One of Jack’s sisters sadly died before the sign was put up, but I know she would have written a very cross letter to whoever was responsible.”
Developer Jelson Homes, who built the street, said the matter had been passed on to South Kesteven District Council but declined to comment further.
The council said the sign had been installed based on information supplied.
Head of development and growth at the district council Mark Williets said: “We have been made aware of the extremely unfortunate error in road naming relating to able seaman John Audas, also known as Jack.
“We worked closely with Stamford Town Council to identify worthy road names and we are now working with them to resolve the situation.
“We will be in a position next week to say exactly how that will be achieved.”
Jack was a pupil at the old Bluecoat school in St Peter’s Street.