Here is a hint: the Social Security Death Index shows that his Social Security number was issued in New Jersey.("United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JKY4-531 : 20 May 2014), Charles W Tantum, 05 Dec 1991; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).)
The following articles were gathered from GenealogyBank.com:
Norma's obituary: "Norma V. Tantum
Boynton Beach, Fla. -- Norma V. Tantum, 64, died Wednesday at home.
Born in Boothwyn, PA., Mrs. Tantum was a resident of the Trenton area before moving to Florida seven years ago.
She was a clerk with McGraw-Hill Publishing Co. in Hightstown.
Surviving are her husband, Charles W. Tantum; three son, David Tantum, of Albuquerque, N.M., Charles L. Tantum of Boynton Beach, Fla., and Dr. Lloyd A. Tantum of La Fallotte, Tenn.; and four grandchildren.
Funeral services will be 1 p.m. Saturday from the Boynton Memorial Chapel, Boynton, Beach, Fla.
Memorial contributions may be made to the American Heart Association [address omitted]."(Trenton Evening Times (Trenton, New Jersey) Saturday, April 26, 1986; Page: 36)
The obituary for Charles W. Tantum, who died 5 Dec 1991 at Boynton Beach, FL, states that he was born at Cream Ridge (NJ).(Trenton Evening Times (Trenton, New Jersey) Saturday, December 7, 1991 Page: 8)
The obituary for Elwood C. Tantum, 72 born in New Jersey, who died at Vero Beach, FL, on 22 Nov 1990, states that he had a brother, Charles Tantum of Boynton Beach, FL.(Trenton Evening Times (Trenton, New Jersey) Saturday, November 24, 1990 Page: 9 )
The birth announcement for Charles Allen Tantum, son of Charles Tantum of Bordentown (NJ), states that the mother is the former Doris Bozarth of Bordentown, while the father, Charles, was the son of Mr. & Mrs. Fred Tantum of Ward Avenue, Crosswicks (NJ).(Trenton Evening Times (Trenton, New Jersey) Wednesday, April 10, 1946 Page: 23 )
The obituary for Mrs. Anna W. Tantum, 80, of Ward Avenue, Bordentown, states that she died 10 Dec 1971 at the Baptist Home of South Jersey, Riverton, She was born in Crosswicks. She was the widow of Fred Tantum and was survived by two sons: Charles Tantum of Bordertown, and O. Pete Tantum of Crosswicks; a daughter Mrs. Mabel Sped of Torrance, CA two; brothers: Alexander Wood of Cherry Hill and Ernest Wood of Burlington; a sister, Mrs. Evelyn Harmer of Bayonne; and grandchildren.(Trenton Evening Times (Trenton, New Jersey) Monday, December 13, 1971 Page: 8 )
The obituary for Mrs. Ella Wood, widow of Alexander J. Wood, states that she died on 20 Feb 1938 at her home (Crosswicks?, where the article was written). She was survived by daughters Mrs. Fred Tantum of Crosswick, Mrs. Joseph Lane of Neptune, Mrs. Milton Chamberlain of Groveville, and Mrs. Clarence Harmar of Bayonne; 5 sons: Harris, Thomas and Alexander of Crosswicks, Ernest of Ellisdale, and Fred of New Lisbon; and a sister Mrs. Annie Williams of Trenton.(Trenton Evening Times (Trenton, New Jersey) Monday, February 21, 1938 Page: 10 )
Wedding announcement (with picture):
"Mrs. Charles A. Tantum. The former Miss Eleanor D. Bozarth, daughter of Mr. and Mrs. George Bozarth Sr. of Butts Avenue, Bordentown, who recently was wed to the son of Mr. and Mrs. Fred Tantum of Ward Avenue, Crosswicks. The couple resides in Bordentown."(Trenton Evening Times (Trenton, New Jersey) Sunday, October 21, 1945 Page: 14)
The obituary for Fred Tantum, 77 of Ward Avenue, states that he died on 23 July 1961 at St. Francis Hospital. He was a farmer. He was survived by wife Mrs. Anna Wood Tantum, sons Orville of Crosswicks, and Charles A. of Bordentown, daughter Mrs. William Speck of Brazil, brothers Elmer E. of Trenton and Walter of Crosswicks.(Trenton Evening Times (Trenton, New Jersey) Monday, July 24, 1961 Page: 10)