It's a while since you posted your message, but I am hoping you will still get this follow-up. Here goes: in the 1851 census there is William Dalling, aged 68, Shoemaker (Master) born Ilfracombe, Devon with his daughter Mary Ann, 33, Milliner and son Edwin,30. Right next door in Fore Street, Ilfracombe we have William Dalling, 38, Hair Dresser, b. Ilf. with wife Mary Ann, 38, Domestic, b. Ilf., son William D., 10 and daughter Juliannah, 2. Are they the ones you are looking for? If so please email me.