Two "Haseltine" brothers, Robert and John, emigrated from Biddeford, Devonshire, England to Massachusetts Bay Colony & settled at Rowley, Essex County, Massachusetts.
Somebody wanted to change the spelling to "Hazeltine" without any justification.
George Brainard Blodgette and Amos Everett Jewett. Early Settlers of Rowley, Massachusetts. 1933. Reprinted by the New England History Press, Somersworth, New Hampshire. 1981. Pages 142 - 146