There is a birth registered as Thomas Ford of Leeds Dec 1856 Vol 9B Page 350. According to GRO this appears to be an unmarried mother as there is no mother’s maiden name. However, through experience, I have found this is not always the case as I wasted the cost of a birth certificate to find that the mother was married and that the information on GRO was not fully correct. This has not been corrected since my complaint. If you think it is worth sending for this detail it might be that this would provide the mother’s name but be prepared for the father’s name to be missing.