Hi, this may be a long shot but I found a marriage of McCormick & Boyle.
Marriage:
Henry McCormick age: 41 widower father: James McCormick mother:Janet Reynolds
&
Mary Boyle age: 29 single father: Owen Boyle mother: Mary Wiggins
married Aug 1859
** had a daughter named Rose
Could this Mary Boyle & Rose Boyle be related??
In a coincidence Owen Boyle died 1884 in Milton & John McCormick died 1886 Milton. Sometimes you may have to look for relations to find the person your looking for. Hope this helps, Kim