Peter "Bud" Edward Frederick, 89, of Terre Haute, IN, passed away Friday, August 22, 2025. Peter was born to Peter Edward Frederick and Isabelle Ann Paul in January of 1936 in Joliet, IL. He later went on to serve in the United States Army during the Korean War. He then went on to marry Lucille Florence Dunn and together they raised four sons. He worked for the Plumbers and Steamfitters Union for more than 30 years until retirement. Peter is survived by his sons Pete (Amy), Steven, Keith, and Daniel (Susan); grandchildren Stephanie, Brendon, Elizabeth (Luke Flaa), Ashley, Brandon, Brooke, Bryce (Lexi), Brittany, Cameron, and Cole; great-grandchildren Octavia, Amira, Matthew, Davina, and Mallory; sister-in-law Jerry; and many nieces and nephews. He is preceded in death by his parents; his beloved wife; and siblings Rosemary, Lois, and Paul. Per his wishes, cremation was chosen. He will be laid to rest at Mt. Pleasant Cemetery.