Linda,
It was obviously a bit too late last night for my brain to be working properly! But yes, the man's name was David DULLEY, gentleman, and two years later in 1855 his wife Mary had her will proved too. I'll have a bit of a search at the Censuses myself, but it would be good if someone could find out/knows when or if this cottage might have been demolished...
regards, keith
p.s. And there he is in the 1851 Census as large as life, aged 78, living with his wife Mary at 58, High Street, Wellingborough. He gives his profession as "retired brewer", which I do happen to know was a DULLEY family business. I wonder whether 58, High Street was also known as "Rosehill Cottage", and what stands there today...?