Hi Norman, I don't know anything about the ancient history of the Frankish family, but if you are interested in your own Frankish family history, I would suggest you start with your grandmother and work backwards. Write down everything you know and fill in the details as you go and verifyeverything.
For instance you can use the Free BMD to get information that was registered after he first registration year( 1837) and the IGI ( which includes some older records available free online by the LDS) has other information you can find online. http://www.familysearch.org/Eng/Search/frameset_search.asphttp://www.familysearch.org/Eng/Search/frameset_search.asp
There are other websites like 'Rootschat' www.rootschat.com where people help each otherto trace their families through Census records(although the 1881 UK census is available free on the IGI site.) 'Rootschat' is free to join and private. I suggest you visit and explore the site to get to know it.
Free BMD shows a James Edwin Dickenson and a Mary Elizabeth Frankish possible marriagein the 4th quarter of 1900 in Chorlton,folio 8C page 1049. With that information if this is your grandmother, you can apply for her marriage certificate which will give you more information to go back further. EG.Her age and where she was living and he fathers name will be shown and that will assist you to find the birth as there are a several'Mary Elizabeth Frankish' listings on the free BMD . The marraige is also listed n the Lancashire BMD and shows they were married at Ardwick, St Benedict.
When you get apply for a BMD certificate you can apply online for one and you will get a reduced rate for the certificate if you can provide the details from the Free BMD such as year, quarter,location,folio and page number. Always request the 'long form' as it has more details on it.step by step you can work backwards and you can find more information such as occupations and siblings from censuses.Good hunting! and enjoy being a detective :-))Jean