Identity crisis?

When I was a child my father's father lived in our house with us, so when the phone rang and someone asked to speak to "Mr. Burrard" I had to ask "which Mr. Burrard, please?". Today, long after both my grandfather and my father have gone to a better place, I have to stop myself from asking the same question when people phone me and ask for "Mr Burrard" - I can't imagine that it could possibly be me that they want to talk to!