Rannie
Here is a link below which follows their son William Rathbone's (1852) family - specifically his daughter Elizabeth Ann (to a Shorrock's) and her daughter Lillian to a (1938 to a John L S Dorrian).
There were two sons:
Eric A Dorrian b-1938 Married Margaret Brown in 1969 (Potteries)
Trevor A Dorrian b-1943 Married Joyce Brown in 1969 (Potteries)
RootsWeb's WorldConnect Project: Nottingham; Upton, Hornby, Windley, Holmes, Smith, Waplington, Whitehead, Rhoades
Hopefully this info will provide another line to the tree?