My latest problem: William Bulkeley
His profile says he was born in 1628. His mother died in 1626 (two years before his birth), his daughter was born in 1636 in Barbados (when he was 8 years old).
FamilySearch has a well-documented profile for his father Peter Bulkeley: https://www.familysearch.org/tree/person/details/MF7N-YHJ William Bulkeley is not on the list of children. There are a few other trees on Family Search that list William as a child but say that his birthdate is 1618, not 1628. No documentation though, and his mother had a different child that year who did not live long enough to reproduce. None of the other Bulkeley sons have a daughter Mary that matches Willam's daughter.
Wikipedia lists a son William, citing a book on the Bulkeleys as a source; but the lack of information on William suggests that he didn't live long enough to be christened. https://en.wikipedia.org/wiki/Peter_Bulkley
Mary Bulkeley (William’s alleged daughter) was married in Barbados in 1656. The rest of the Bulkeley family emigrated to Connecticut in 1635, so if William exists he may have decided to go to Barbados instead: https://www.familysearch.org/tree/person/sources/LH6W-HHX The marriage record doesn't mention her parents' names, but it says very clearly that her husband's name is Thomas Switter not Thomas Witten. It's possible that the clerk misunderstood the name, and based on the documents for Thomas at https://www.familysearch.org/tree/person/sources/LTTZ-YNQ it looks like the name started out as Witter and eventually ended up as Witten, possibly in a later generation.
A more likely explanation is that these aren’t the right people. According to the more complete timeline on Family Search, Mary and Thomas Witten were childless for ten years after their marriage then suddenly started cranking out lots of babies, including five that were born after Mary’s death. The one that concerns me personally is Thomas Witten, who was born during her lifetime. https://www.familysearch.org/tree/person/timeline/LH6W-HHX Some of these children were born in Connecticut (consistent with the Peter Bulkeley family) and some were born in Maryland (consistent with the Wittens).
There are christening records showing that Thomas Witter of Maryland had a wife named Mary, but there doesn’t seem to be any evidence for her maiden name or her parents’ names. FWIW Wikitree lists William Bulkeley as Mary’s father but says his parents are unknown, and that they got the information from a family tree on Ancestry: https://www.wikitree.com/wiki/Bulkeley-257