Scott, I don't have any information regarding your branch of the NINNESS family however, I can confirm the name William is somewaht common in the NINNESS family. My ancestor, William Ninness, came to Australia as a convict in 1829 from Penryn in Cornwall. He apparently was convicted and sentenced to transportation to Australia for theft of food. I do also know that his father was also a William NINNESS who was married to a Grace Dillon JENKINS who also originated in Penryn Cornwall. we believe that her Date of Birth was around 1784. I currently have a researcher working on William's ancestry. I believe that they are all probably connected.