Who are you?' he asked suddenly.
I'm not sure,' replied the other. 'I rather think I am your long-lost brother.'
But I haven't got a brother,' objected Tommy.
It only shows how very long-lost I was,' replied his remarkable relative. 'But I assure you that, before they managed to long-loose me, I used to live in this house myself.

Author: G.K. Chesterton