I'm not sure what you did, but I added him, then removed him. I left a note in the margins:
Edit: After considerable reading of the references here and other places, It's apparent that this John Doane did NOT die in MA in 1629, but in England. He may actually be the parent of Martha but that should be considered unproven. There is lots of discussion about Deacon John Doane, who did come to Plymouth. It's pretty well established that Martha was his sister. If you solve his parentage, you solve Martha's. I didn't look into Anne but apparently she's also considered a sister of John and Martha.
It's also clear to me that this profile should be attributed to SIr John Doane of Utkinton and Flaxyards and all children disconnected. Instead, he was disconnected from his parents and some children remain.