I have checked our family tree as far back as the early 1800's and do not find yet that we have anyone by those names in our Knowles family tree. We have several Margaret's but not Margaret Knowles. We have hit brick walls when it comes to getting any information from the Bahamas, they haven't made anything public on Ancestry. We are looking for Richard Whitehead Knowles from Rock Sound, if you have any info on that part of the Knowles family I would love to see it. You might also try googling the names or trying rootsweb.com. I have found some info on these sites. We do have a Mary Ann Carey that married a Thomas E. Brady in Rock Sound on April 4, 1859, but do not have any information on who her family is. If she is part of your family please let me know. Good luck to you!