Tuite (nee Howard), Rebecca - Dead England 1748

[Carl Fürst]

Hi!
 
Looking for identity/parentage of a Rebecca Howard of prince's street, Lancaster, daughter of an unknown Howard and his wife Elizabeth. She married a planter in St. Croix in the West Indies Richard Tuite (who, to my knowledge, spent most of his time in England) and she died in 1748, later remarrying John Carter, M.D. She was probably born in the second half of the 17th century. Her will is dated 1756 and then she was living in Prince's street, London. The source for this information is www.vifamilies.org as well as Burke's Peerage. Could she be related to the Howard family of Carlisle who resided in the vicinity of Lancaster? The Tuite family was an old Norman one with base in Ireland and England, and was rather well off in the 18th century, which leads me to the conclusion that a noble ancestry (and perhaps a connection to the noble Howards) is entirely possible. In some sources, she is called 'Rebecca Philipps', which could be an error derived from a patronym.
 
Would highly appreciate any help with this since I've hit rather a dead end and have been trying to find her for quite a while. Any kind souls out there to give me a hand? What are the English sources for this type of research?
 
Regards,
Cf