She moved to Mount Maunganui in the 1960s with her husband Clyde Urwin. The pair married in April 1941 and had five children.
Later in life, she cared for her mother until she passed away and then for Clyde, as he had emphysema and lived with other injuries.
"I just got on with it," said Urwin.
Her second-oldest son Keith Urwin said his mother had "always been a very reliable and steady person".
"She was the oldest of seven so it was her job to bring up the other children in the family. The nurturing started there.
"And a lot of her life was spent farming and working hard."
Asked how it feels to turn 100 on the first day of the new year, Urwin said she didn't know any differently.
"I have always done it this way."
Keith, 78, said the family felt "very proud" to be celebrating his mother's centenary year.
"Not many people get this far. She has got loss of short-term memory but she can still hold her own with conversation about family and the past."
Urwin said she wasn't the type of person to set new year's resolutions as she "wouldn't be able to keep them".
But Keith said his mother "set a standard" for him and his siblings to live up to in regard to helping others.
She volunteered at Mount Maunganui Care and Craft Centre for many years after Clyde passed away and was passionate about giving back to her communities.
She didn't smoke, only drank alcohol on occasion and did yoga up until she was 86.
"She led a pretty controlled life," said Keith.
But Urwin - also a passionate gardener who learned Spanish in her 70s - believed she didn't take care of herself particularly well.
"I just lived life."
And her advice for living a long life carried a similar sentiment: "Just live it. It is there to be enjoyed.
"But you have got to work hard."
She said she felt "proud" to be part of five living generations of family and always loved spending time with her great and great-great-grandchildren.
Her birthday would be spent having an afternoon tea with family and sitting in her "favourite blue chair" overlooking the water at son Gary's home.