Keith Bell has found out some more snippets regarding the changes in partnerships as follows:
1) An advert from the Newcastle Courant of 23rd August 1828 announcing the firm of "Cornfoot, Colville & Co" commencing their operations from 13th August 1828. The pottery was sold at auction on 8th January that year (Lot 16) as part of the sale of the assets of Nicholas Bird when he went bankrupt.
2) An advert from the Newcastle Courant of 28th May 1831 announcing the
sale of the lease of the pottery at the Low Lights and dated 26th May 1831.
Thanks Keith, I have updated the North Shields Pottery partnerships page with this new information.