His father was William Wedgwood Benn b. May 1877 and his parents in turn were John Benn and Lily Pickstone. The name Wedgwood entered the family because Lily was a distant relative of Josiah I. To learn more about the amazing Tony Benn, google around, Wikipedia has a nice article about him. Another in a long line of Wedgwoods who have taken life by the horns and run with it, stirring up the dust as they went, just like our beloved Josiah I and our friend, the late Piers, Lord Wedgwood of Barlaston. May Tony rest in peace and love. Thank you to Lord Pulford of Scotland, really a Brit not a Scot, for alerting me to this latest death in the greater Wedgwood world.
I have just found an interesting blog entry regarding Mr. Benn which gives more biographical information about his family. See it here.