William J. Cosgrave Obituary
With heavy hearts, we announce the death of William J. Cosgrave of Alsip, Illinois, who passed away on March 29, 2026 at the age of 102. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.
He was predeceased by: his wife Anne Cosgrave (Sheehan); his parents, Michael Cosgrave and Nonie Cosgrave (Fahey); his sister Mae Byrnes (Roger); and his siblings-in-law, James Sheehan, Thomas Sheehan (Sophie), Mary Whalen (John), Margaret Betts (Mel), John Sheehan (Betty) and William Sheehan.
He is survived by: his children, Susan Gajos, Kathy Flaherty (John), Michael Cosgrave, Kevin Cosgrave (Diane), Mary Flaherty (Stephen), Noreen Polacek (Dennis) and Peggy Lenzen (Hank). He is also survived by 19 grandchildren and 32 great-grandchildren.
In lieu of flowers, donations would be appreciated to the Mercy Home for Boys and Girls (http://www.mercyhome.org).
