Mary J. Yonker, nee Pelko. Age 84. Beloved Wife of the late Robert E. Yonker. Loving Mother of Robert E.(Delores) Yonker II. Dear Sister of Justine(Ronald) Crean Sr., Alfred(Dorothy) Pelko, the late Anthony(Mildred) Pelko and the late Stanley(Josephine)... View Obituary & Service Information