I see the headstone giving the Pontypool address, but in 1911 the family, Thomas, wife Ellen Rose and 8 children (including Edward) were living in Wooton-under-Edge. Can't give too much detail off 1911 census. They were also at Wooton-under-Edge in 1901:
Household Members:
Name Age
Thomas Grimes 32
Rose Ellen Grimes 33
George Grimes 13
Frederick Grimes 10
Edward Grimes 8
William Grimes 6
Henry Grimes 5
Emily L Grimes 3
John Grimes 1
They were in Pontypool in 1891
Looking for death for Thomas & Rose