A DAD has become Britain's youngest grand-father at the age of 29 after his daughter gave birth at 14.
Shem Davies was also 14 when he became a father for the first time.
Now schoolgirl daughter Tia has had a baby girl a week before her 15th birthday.
Last night jobless Shem - who split with Tia's mum Kelly three months after Tia was born - said he was "absolutely delighted" at the new arrival.
Tiny Ava Grace is in an incubator after she was born ten weeks early - weighing less than 2lb.
But the family said she is "doing remarkably well" at the special care baby unit where she is being cared for in Bridgend, South Wales.

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