I'm afraid reference to Pembroke Borough is a bit of a red herring as you say that the male members of the family are shown as Freemen of Haverfordwest, not of Pembroke. The fact that they lived in St. Issells is irrelevant so far as eligibility for admission as Freemen is concerned - the criterion was having a father who was a Freeman, regardless of residence. For example, many of the Freemen admitted in past years have in fact been resident overseas at the time of their admission. Incidentally, you may be interested to know that the Freemen of Haverfordwest have now, I understand, amended the criteria to facilitate the admission of women. I agree with the suggestion that Roy Folland, Master of the Gild, will have a great deal of information, as probably will Messrs. R.K. Lucas, Clerks to the Gild, but I still believe that the afore-mentioned register, which contains details of the names, addresses and dates of admission of all Freemen, provides a comprehensive list and a convenient, easy-to-use source of information.