William Rainsborowe
American colonist

Major William Rainsborowe (? – fl. 1612–1673), or Rainborowe, was an officer in the English Navy and New Model Army in England during the English Civil War and the Interregnum. He was a political and religious radical who prospered during the years of the Parliamentary ascendancy and was an early settler of New England in North America.
Earlier life
Rainsborowe's birth and early years are obscure. William's brother was the Leveller Thomas Rainsborough so it is more than certain he was born in Wapping London England. His father, William Rainsborough, was a captain and Vice-Admiral in the Royal Navy, and later Ambassador to Morocco (at which time he declined an Hereditary Knighthood).
In later years William held Property in Wapping and Shadwell London. He also had a home in Putney London, as his brother Thomas stayed there during the Putney Debates of 1647.
William Rainsborowe was educated in Magdelene College, Cambridge
New England and Morocco
William moved to the Massachusetts Bay Colony in the 1630s with his sisters, at one point living in Charlestown and was serving in the militia there in 1639.
This brief starts where responsible research should: with the source description of “William Rainsborowe” as american colonist. Everything that follows is an evidence route, not borrowed authority.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 15, 2026. The linked authority identifier is Q8017335. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1612, 1673, 1647 and 1639.
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This entry incorporates text from “William Rainsborowe” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.