Dennis J. Siwak's obituary , Passed away on January 23, 2026 in Collingswood, New Jersey
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Dennis J. Siwak

July 3, 1953 - January 23, 2026 (72 years old)

Collingswood, New Jersey

Dennis J. Siwak's obituary , Passed away on January 23, 2026 in Collingswood, New Jersey
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Dennis J. Siwak

July 3, 1953 - January 23, 2026 (72 years old)

Collingswood, New Jersey

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Dennis J. Siwak Obituary

With solemn hearts, we announce the passing of Dennis J. Siwak of Collingswood, New Jersey, whose presence will be deeply missed, having departed on January 23, 2026 at the age of 72. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.

He was predeceased by: his parents, Henry, Sr. Siwak and Martha Siwak (Stubenski). He is survived by: his wife Rosemarie Siwak (Way); his mother-in-law Margaret Way; his siblings, Henry Siwak, Jr., Deborah Barton (Sherman), Thomas Siwak (Merrily) and Leonard Siwak (MaryPat); his nieces and nephews, Henry, Michaelene, Alexandra, Autumn, Marissa, Tim, Megan, Michael, Kristina and Kevin; his cousins, Jay and Diane Mancini; and his pets, Francesca and Sam.

In lieu of flowers, memorial donations may be made in Dennis's memory to the Burlington County Animal Alliance (http://www.bcaaofnj.org.).

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March 12, 2026

Lilla Cervino wrote a sympathy message

“Dear Siwak Family I was very sorry to just hear of Dennis passing away in January. Had I known I would have been there to pay my respects. Dennis was a good friend of mine and I will never forget how he drove back to my house on Senior night to make sure my dad didn’t kill me for having the entire Senior class show up at my house when there were only about 10-12 classmates invited. I do hope Dennis did not suffer and will keep him, his family and loved ones in my prayers. Sincerely Lil Cervino”

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Events

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Wed

Feb 04

Visitation

St Teresa of Calcutta Church
809 Park Ave, Collingswood, NJ 08108

Wed

Feb 04

Mass of Christian Burial

St Teresa of Calcutta Church
809 Park Ave, Collingswood, NJ 08108

Wed

Feb 04

Burial

Life Cemetery
3005 Fostertown Rd, Mt Laurel Township, NJ 08054

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