Hello Diana, I know nohing of the Marsdens. However, I do have a family link with a Thomas Beavan of Skynlas through my Pugh line of Llandeilo Graban. There was a cousin relationship at first, because Thomas Beavan named his relationship to the Pughs in his will. Also, interestingly enough, I have also got links with the Baptist movement through marriages made in that direction. There is a Probert link connected with the Baptist Church. I have it all down somewhere around the house, but have not looked at it for a while. Life got in the way. In the meanime, I wish you all the best in your research. Regards, Maureen Rhondda