Hi
Ah right, yes i am Olivers son, don't think we have met before? From the info I have gathered so far Thomas and Martina never spoke of his father and his birth certificate states father as unknown. I think if they wanted it to remain private then that's how it should be.
Dad has asked me to look into Blodwyn Collier but haven't looked to closely yet. I have made my family tree public if you want to have a look though its still under construction.