SOURCES: LDS FHL Ancestral File # 8MLK-G6
<a href=http://freepages.genealogy.rootsweb.com/~parisho/m/mercer.html>Mercer /Vassal-Vestal/Greenaway Genealogies</a>
Above web site references " 'Our German, Pilgrim Quaker Ancestors' by Mary Lontz SLC929.273.L8691 New England Hist. & Gene. Reg. Vol 45 Pg 237, and Vol 47, pg 511-515."
Sarah had a first marriage to ? Daniel's will states" as she or her former husband did owe." According to the Will as well, Sarah was expecting another child, which was apparently born after Daniel's death.
My note: Therefore, Sarah was very likely not born prior to 1605 (for child-bearing purposes.)