Did 1st wife of Francis ‘Anna’? Sprague die before 1623 in England or before 1630 in the Plymouth Colony, when Francis Sprague, of Duxbury married 2nd wife of Francis Sprague and had two more children?
Caleb Johnson’s http://mayflowerhistory.com/anne page for passengers of the Anne and Little James in 1623 (https://www.geni.com/projects/Great-Migration-Passengers-of-the-Anne-Little-James-1623/2066) shows:
"Francis and Anna Sprague and daughter Mercy"
But if Anna was his wife, then Anna Lawrence was not his daughter.
The main authority for emigrants to New England between 1620-1640 is Robert Charles Anderson’s The Great Migration Begins books. Ongoing updates or changes for these colonists are (generally speaking) seen at American Ancestors/New England Historic Genealogical Society and their publications https://www.americanancestors.org/about.
Christopher C. Child, on staff there, is the editor of the Mayflower Descendant. https://www.americanancestors.org/staff/christopher-c-child
Alicia Crane Williams, FASG, on staff there, is the Lead Genealogist of the Early New England Families Study Project, which is the continuation of The Great Migration Begins. https://www.americanancestors.org/staff/alicia-crane-williams-fasg
The current Mayflower Society historian is Caleb Johnson. https://twitter.com/mayflowercaleb
So - we would want to examine in more detail than what Johnson has a simple listing on his website.
The next post is detail of the problem from Wikitree.