Have you thought about naming conventions? For instance:
first son - paternal grandfather's name
first daughter - maternal grandmother's name
second son - maternal grandfather
second daughter - paternal grandmother
third son - father
third daughter – mother
This seems to work for 3rd son (George) and 3rd daughter (Mary).
It would suggest that George Maule's parents might have been James & Elizabeth Maule; and that Mary Dickinson's parents might have been Robert and Jane Dickinson.
