Rose Elliot was ready to celebrate her 100th birthday on September 16, 1907.
But after her niece, Doreen McWhirter from north Belfast, checked her birth certificate, she discovered her aunt was actually born on September 28, 1905 - making her 102.
"It was a real shock," Mrs McWhirter said.
"The nursing home she lives in was all set for a big party and I had already bought her a 100th birthday card.
"I told them that we had a wee bit of a hiccup and explained about the birth certificate and her birthday being on the 28th. They were shocked, too." [Link]