Coldbrook Farm is a 17th century Grade II listed Welsh farmhouse. Run-down, off the beaten track surrounded by working farm buildings in a muddy yard, its lavish carved Tudor timberwork is a clue that there is more to this farmhouse than meets the eye. As owners Bill and Kim grapple with the challenges of mixing old and modern, architectural expert Kieran Long and historian Kate Williams dig deep into the archives uncovering evidence that points towards Coldbrook's possible links with one of the most powerful lords in Britain.