There is no different spelling of the word "grandfather" in the UK and US.
Grandfather
The term is hyphenated, as great-great-grandfather(grandfather's grandfather).
dziadek
The translation for "grandfather" from Russian to English is "дедушка" or "дед" (dedushka or ded).
No. Joseph Smith, Jr. never lived in England. His lineage is from England, however. His great-grandfather's grandfather Robert Smith (Joseph's great-great-great-grandfather) moved to Massachusetts from England in 1638.
Gido
Avô. (av-owe)
Jacob black's great-grandfather's name is ephraim black
England
The same as you, but we spell England with a capital E.
In French Canadian, "grandfather" is spelled "grand-père."
grand-père(familiarly granpapa)