Many of Ralph/ Mary Trelfa descendants moved to Liverpool long before Daniel was born, some via Backford, some via Middlewich and via London.
As an example, you can see son, John's marriage to Ann Cumberland in Toxteth in 1785 and his death at Walton on the Hill in 1812 on Lancs Parish Clerk site. ( it says his parents are Ralph Oakes and Mary Trelford!).
Following all the descendants has involved a massive undertaking with a multi pronged approach using FindMyPast, Church Registers, Wills and Ancestry and could not be done without help from a co-worker.
Ralph's father was John and he is a product of his second marriage, the other children from his first marriage.
How much does a FTDNA cost? Looking at the site, it seems costly and your result not very informative.