I wasn't aware that the Dorricotts used to be in Lancashire. I can't help too much, but this is my direct family:
Steven Dorricott (me, 14 years old) Jim (WJ) Dorricott (my dad)born in Shropshire, moved at 4 His sister, Jane and brothers, John and Jeff William T Dorricott (grandad)born in Salops, died two years ago
Hope it helps in some way. Contact me for more information.