I have been trying to find Claud on the 1911 census, typing in the name Clara, as suggested, but with no luck! I have also tried putting in his fathers details which you kindly supplied, but still nothing. I tried to use the 1911 site when it first started, to find another relative, but again failed to turn up anything, and yet a cousin put in the exact same info and found the details she was looking for. really doesn't make sense to me?
Thank you for finding Joan.