I must agree that much of this programme resembled a history lesson with far too many passages read aloud by Celia Imrie (poor editing?). Although I imagine that there would have been a great deal of research done which wasn't shown, it would have been more interesting to see how the family was traced. It comes back to poor editing to me. It really feels as though the producers have been told to find a different angle for this series, and have chosen to concentrate on specific ancestors or periods of history to the exclusion of others. If the aim is to show how ancestors are traced, then the steps you have to take to do this are really not well represented.
As for the tenuous link between Celia's son and his interest in politics, jumping back several centuries to find a politician was a bit of a leap of the imagination. Suppose she had said, "My son is interested in bricklaying." Would they have gone back a couple of centuries to find another brickie?
All in all I am finding this series a bit of a yawn.

Gillg