I would use any information gleaned from the internet as a "road map", then use primary and secondary sources to verify the information. I would not accept the information blindly, and I believe that you and I are of one mind here.
I've seen some interesting things on various websites...parents having children at the age of six, individuals claiming an ancestor of royal descent, when in fact the original source stated such a relationship is "tentative", "speculative", "problimatical", "not fully proved"...I am sure you could recount some horror stories yourself.
In the area of my own descent from Joseph and Ruth (Barnard) Peaslee, I was fortunate that their son John (1679-1752) became a member of the Society of Friends, which was careful to record parentage in their certificates of marriage. I have tried to collect as much source material as possible in verifying my descent from John Peaslee, as his wife, Mary Martin (ca 1678-ca 1744) was the grand-daughter of Salem witch Susannah (North) Martin.
I have not fully delved into the ancestry of Ruth Barnard, other than to say that she was the daughter of a Thomas and Eleanor (-----) Barnard. I checked "Colonial Americans of Royal and Noble Descent, Alleged, Proven and Disproven" by Patricia Ann Scherzinger , and found no listing for Barnard.