GUERRERO- of Cambridge, April 29th, Maria Del Rosario. Devoted mother of Erika Maria Navarrete and Karen Gabriela Navarrete both of Allston. Beloved sister of Roberto Guerrero of California, Veronica Guerrero and Carmen Elena Guerrero both of El Salvador. Loving daughter of the late Antonio Hernandez and Maria Guerrero. Relatives and friends are kindly invited to attend a Funeral Mass celebrated in St. Mary of the Annuciation Church, 135 Norfolk Street, CAMBRIDGE on Monday morning, May 3rd at 9 o'clock. Visiting Hours will be held in St. Marys Church on Sunday from 3-7 PM. Services will conclude with interment at Woodlawn Cemetery, Everett.