Joan Purchase, daughter of Oliver Purchase, was born about 1578,  possibly at Dorchester, Dorset, England.
25 MAR 1578 has been given as her birth date, without citation, in reference to her gravestone and to the Capen Family Record in a Bible printed in 1615.It is a literal interpretation of the transcriptions, probably not her actual birthdate.
Joan Purchase married Bernard Capen 31 May 1596.
They immigrated to Dorchester, Massachusetts on the unnamed ship departing Weymouth, England and arriving at Boston about 24 July 1633.
On the ship with them were their son John Capen, and their daughter Honor Capen with her husband William Hannum, and possibly their daughter Dorothy Capen. Joan's brother Aquila Purchase sailed on the same ship with his wife Anne Squire and their children, but Aquila died during the voyage.
Their daughter Susanna Capen and her husband William Rockwell had immigrated in 1630 on the Mary & John, and their daughter Elizabeth Capen married in 1630 in England to Thomas Swift, who is on the passenger list of the Recovery in 1634.
Gary Boyd Roberts. Ancestors of American Presidents New England Historic Genealogical Society; Location: Boston, Suffolk, Massachusetts, USA; Date: 2009;;
The Great Migration Begins: Immigrants to New England 1620-1633, Volumes I-III. (Online database: AmericanAncestors.org, New England Historic Genealogical Society, 2010), (Originally Published as: New England Historic Genealogical Society. Robert Charles Anderson, The Great Migration Begins: Immigrants to New England 1620-1633, Volumes I-III, 3 vols., 1995). Profile for Bernard Capen, pages 309 - 311
Genealogical Gleanings in England, The New England Historical and Genealogical Register. Boston, MA: New England Historic Genealogical Society, 1847-. (Online database: AmericanAncestors.org, New England Historic Genealogical Society, 2001-2013.) NEHGR Vol 49, pages 489 - 490
Reconstructing a Passenger List, Great Migration Newsletter, V.1-20.(Online Database: AmericanAncestors.org, New England Historic Genealogical Society, 2015.), Vol 3, page 9
Purchase-41 and Purchase-19 appear to represent the same person because: I had an Aha! moment. I know John Purchase doesn't belong. No one ever heard of him. I googled John Purchase 1578-1653 and what did I get Joan. Comparing the dates, it seems clear to me that John is really Joan. John even had Joan's husband attached at one time. Please merge John away into Joan. Thank you.