Age 75, of Cheektowaga, New York. Nelson was a U.S. Navy Veteran, and a member of the Sloan Memorial VFW Post #355 in Sloan, New York. He also worked for Ford Motor Co. as a Tool and Die Manufacturer and was a member of the Ford Fire Brigade in Woodlawn, New York.

Nelson was the son of the late Emily Bielanski and Andrew Siwa.

Beloved husband of Theresa (nee Malczewski) Siwa. He was a devoted father of Anne Marie (David) Quinn, Deborah Siwa, Nelson, Jr. (Amy) Siwa, Jennifer (Martin) Augustyniak and David (Jennifer) Siwa. Nelson was a loving grandfather of Ashley, Justin, Emily, Mathew, Ethan, Alexander, Ella, Jonathan, Owen and Eli.

A dearest brother of Ronald (Joan) Siwa and the late Arnold (Mary Ann) Siwa. He was also survived by nieces and nephews.

Family will be present Sunday 2-4 and 7-9 PM at the PIETSZAK FUNERAL HOME, 2400 William St. (near Harlem) where services will be held Monday at 9 AM and at St. Josaphat Parish at 9:30 AM.

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