Hi,
Wondering if anyone knows where Princes Block, Presteigne is?  I have a death cert for an ancestor, George Evans, died 1853 in Stapletons Hill, Presteigne.  Present at the death was a John Evans, with the address of Princes Block Presteigne.  I have been unable to locate this address, and havent been able to pinpoint a john in the 1851 census, and am still none the wiser who this John Evans is as well. 
Any info on this would be greatly appreciated.
cheers
Mark