Two-year-old Owen Targett, of Naburn, was desperately ill with the rare and potentially fatal liver disease biliary atresia, until his grandfather John donated part of his liver for transplant.
Since the operation in November last year Owen has gone from being seriously unwell to becoming an energetic, healthy little boy.
Now Owen and his family are enjoying spending time together over Christmas and the New Year.
Earlier in the month Owen and his five-year-old sister, Kinvara, were able to go to carol singing in their village – which was seen as a landmark for his parents Fleur and James as his health had not previously allowed it.
Fleur said: “We were both a bit teary about it as we’d never managed to go before.