Debra, I have a feeling you may have to abandon some of the family stories. Firstly there is no entry for William Bannister having had a Master's ticket so he could not have been a Captain. The idea of "beautiful state rooms" when she sailed with him can only be a figment of Catherine's imagination. Even if the Captain of the Queen Mary took his wife with him they would just have had crew's quarters - obviously better than the ordinary seamen - but "state rooms"! They were were for the top fare-paying passengers. Accomodation on coasters was of the simplest order, simply because they were at sea for shorter periods and the ships, relatively speaking, were small. There are five deaths for William Bannister around the date you mention, one of them with birth approximately 1813 is registered at Risborough, Suffolk. If this is on the coast it could have been of someone brought ashore for burial. Shields was very important for the coasting trade from the NE area to London, especially for colliers, the Prospect of Whitby pub in Wapping is said to have been named because one could see the enormous numbers of colliers from Whitby lined up to get into the Pool of London to unload. My guess would be that he was mate of one of these many coasters and things were embroidered a bit to make him sound more important. Could be wrong of course but the Tyne and Wear Archives have a lot of information on the ship-building, coasting and general sea-going antics for that area so could be worth a try. Good luck with your searches.