Did smoking cannabis every night give Cherie Blair’s father dementia? That’s what Till Death Do Us Part star Tony Booth’s widow STEPH BOOTH fears – as she reveals in a rawly honest book Nothing in my life could possibly have prepared me for Tony Booth. I met the irascible Till Death Us Do Part star – who also happened to be Cherie Blair’s dad – in 1996, on a glorious August evening at a mutual friend’s garden party.