Hi again, Wallie,
Thanks so much for this. I have found William Dyson in the 1861 Census, and also his surviving widow, living with her family in the 1871 Census. However, I have not looked up who was occupying Green Street, (Pendleton) during these Censuses to see whether there was any family connection there, or perhaps some kind of infirmary or hospital.
The death certificate does plainly state "Pendlebury", though the only Green Street in the area is obviously the one in Pendleton you have so kindly pinpointed with this map.
And now an embarrassed admission - the "7" that I read, and thought went with "Green Street" is the schedule number or the number of the listing on the page of deaths. But as you, or Tallboy, have pointed out (thank goodness!), there only appear to be about 7 houses in the street anyway.
It may be that William and Betty Dyson just occupied one of the house in Green Street for a short while up to his death in 1869...
Very best wishes, (and a visit possibly imminent next month to the Salford area),
Keith