Mary Lou Mancuso Arey passed away after an extended illness on July 9, 2014 in Chandler, AZ. She graduated from Villa Maria College, Erie, PA with a Bachelor's in Chemistry and from Fordham University in NY, NY with a Master's Degree in Chemistry. She retired from E. I. DuPont in Wilmington, Delaware and made her home in Sedona and Chandler, AZ. She was predeceased by her parents Rose and Ralph Mancuso and is survived by her brother Richard A. (Rita) Mancuso, her niece, Jeanne Mancuso and nephews, Louis (Margaret) and Bradley (Laura) Mancuso, grandnieces Andrea and Brooke Mancuso, grandnephew, Seth Mancuso and cousins. She was laid to rest at Valley of the Sun Cemetery in Chandler, AZ.