<Li> Mary Margaret Reagan , Frank 's late wife and the mother of his four children , Danny , Erin , Joe , and Jamie . She died on September 14 , 2005 , of cancer . In `` Fathers and Sons '' , it is mentioned that her grandfather helped build the Brooklyn Bridge in the 1870s and ' 80s . </Li>
<Li> Mary Margaret Reagan , Frank 's late wife and the mother of his four children , Danny , Erin , Joe , and Jamie . She died on September 14 , 2005 , of cancer . In `` Fathers and Sons '' , it is mentioned that her grandfather helped build the Brooklyn Bridge in the 1870s and ' 80s . </Li>
blue bloods what happened to frank 's wife
blue bloods what happened to frank 's wife
died on September 14 , 2005 , of cancer
died on September 14 , 2005 , of cancer