OD - memory must be failing -I thought I recalled Clarkson saying it was not well known in the family - but you are probably correct, but does nothing to detract from the achievement.
I have a friend whose Father won a VC at St Nazaire - I have often wondered what it is like learning of your award, and as you get older appreciating what it really means. My Dad was a fireman in London in the blitz (no medals though), and I still find it hard when I see footage of fire crews in the Blitz equating that to the Dad I knew and love.