A history book on the Ayars family that was written many years ago indicated that Robert's parents were Robert Ayars and Margarette Fouche. This book appears to be well done. Also, it was done before internet trees made it so easy to spread misinformation. Did the internet trees you were looking at give documentation to actual documents, or did they simply give someone else's tree? Check out the documentation to decide your answer. Someone else's tree is not really documentation. If the tree owner cites a real document, then look at it. This is my line, but I am currently working on other lines.