The former Theresa Stefaniak, passed away peacefully, at the age of 86.

S he was predeceased by the love of her life and dancing partner, her beloved husband the late Thaddeus, Mankiewicz, Jr.

Theresa was the devoted mother of Linda (David) Smolinski and the late Karen Ann Stone.

A loving grandmother of Brian (Kimberly) Smolinski, Nicole (Brian) Rick, Ashley (Michael) Johnston, Dillon Stone and fond great grandmother of Anthony, Kaitlyn, Jackson, Madison and Carson.

She also survived by nieces, nephews and cousins.

Relatives and friends are invited to gather for a Celebration of Theresa's Life at the PIETSZAK FUNERAL HOME, 2400 William (near Harlem) on Thursday from 3-7 PM.

Relatives and friends are also invited to assemble for a Mass of Christian Burial at St. Philip the Apostle Church, located at 950 Losson Road, in Cheektowaga, New York 14227, on Friday at 10 AM.

Inurnment will follow at St. Matthew's Cemetery, in West Seneca, New York.