This is the tombstone of James M. and Emma Duff, located in Kessler Cemetery, Liberty Township, Mercer County, Ohio. The marker is inscribed:
James Madison Duff was born 5 March 1856 near Columbus, Ohio, to William and Eliza (Lazaliet) Duff. He married Emma Mason 25 January 1879. Emma was born 10 January 1857 to John and Louise (Barkmen) Mason.
James and Emma moved to Chattanooga about 1922 and operated a cream station in the town. James died in Chattanooga on 12 March 1935 of peritonitis from a perforated intestinal ulcer. His widow Emma died of pneumonia on 7 Feb 1946 in her son Jacob’s home in Chattanooga.
James and Emma had the following children:
Jacob William (1882-1948)
Finley Cleveland (1884-1969)
James “Ray” (1886-1962)
Mabel Fern (1891-bef 1935)
Ross F (1894-1963)
Bessie (1903-bef 1920)
Their son Jacob William Duff was the subject of last week’s Tombstone Tuesday post.
WELL KNOWN CHATT CITIZEN DIES SUDDENLY
James Duff, 79, highly respected citizen of Chattanooga, died Tuesday morning at 3 o’clock at his home in that place. He took seriously ill on Sunday. A post mortem which was held by Dr. Dailey Jones was necessary to determine the cause of his death and it was found that a hole in the large intestine which had developed into peritonitis was responsible for his sudden passing away.
Mr. Duff had operated a cream station for six years in Chattanooga and before that lived on his farm in Jefferson township.
He is survived by his wife and six sons: Ollie and Earl in Florida; Finn and Ross of Buckley, Mich.; Roy of Jefferson township, and Jacob of Chattanooga. Two daughters preceded him in death, Mrs. Mable Landfair and Miss Bessie Duff.
Funeral services Thursday morning at 10:30 o’clock at the MP Church in Chattanooga. Burial in Kessler cemetery. SS Egger, undertaker. 
A week later The Willshire Herald printed a biographical sketch of James Duff. What a great find for a family history researcher.
BIOGRAPHICAL SKETCH OF JAMES M. DUFF
James M. Duff, son of William and Eliza Lazaliet Duff was born near Columbus, Ohio, March 5, 1856, and departed this life March 12, 1935, at the ripe old age of 79 years.
While still a young man he came to Jay county, Ind., on the 25th of January, 1879. He was united in marriage to Emma Mason. To this union was born six sons and two daughters, Oley of Titusville, Fla., Jacob of Chattanooga, Finley of Buckley, Mich., Ray of Geneva, Ind., Earl of Minns, Fla., Mabel, deceased, Ross of Buckley, Mich., and Bessie, deceased.
In the year 1891 the family moved from Jay county to Adams county, Ind., where they resided until 1922. Since then he has resided in Chattanooga, O.
At the age of 18 he was converted and became a member of the Macklin Methodist Protestant church. After moving to Adams county he changed his membership to the Mount Carmel Evangelical church. In 1907, realizing the need of a church in Chattanooga, he helped to organize a Sunday school in a vacant room and later on helped to organize and build the present Methodist Protestant church of which he was a charter member and remained a consistent and faithful member until his departure. Almost his last public testimony was that he was striving to lay up his treasures in heaven.
He leaves to mourn his departure, his sorrowing wife, six sons, 33 grandchildren, 18 great grandchildren, two brothers, Frank, of Texas and William, of Hartford City, Ind., and three sisters, May Bolinger, Allie Smith and Maud Baucher, all of Hartford City, Ind. His father and mother, three brothers, one sister and two daughters preceded him in death. He was of a jovial and cheerful disposition and will be greatly missed by his church, neighbors and friends as well as the relatives. After James’ death Emma went to live with her son Jacob Duff in Chattanooga. 
LAST RITES SUNDAY FOR MRS. EMMA DUFF
Funeral services were held Sunday for Mrs. Emma Duff, 90, widow of the late James Duff, who died at the home of a son, Jacob Duff, in Chattanooga. She had resided with her son since the death of her husband 11 years ago.
Surviving are six sons, as follows: Oley W. Duff, Indian River City, Florida; Earl Duff, Minns, Florida; Finlay and Ross Duff, both of Buckley, Michigan; Ray Duff, Geneva, Ind., and Jacob Duff, Chattanooga. Two daughters preceded in death. 
 The Willshire Herald, 14 Mar 1935, p. 1.
 The Willshire Herald, 21 March 1935, p. 6.
 “Ohio, Deaths, 1908-1953,” index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/X6WQ-M9J : accessed 23 Oct 2013), James Madison Duff, 11 Mar 1935; citing Liberty, Mercer, Ohio, reference fn 18828; FHL microfilm 2022485.
 1940 U.S. Census, Chattanooga, Liberty Township, Mercer County, Ohio, ED 54-22, family 291, line 72, sheet 14B, Jacob W. Duff; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 20 Oct 2013); NARA digital publication of T627, roll 3114.
 The Willshire Herald, 14 February 1946, p. 1.
 “Ohio, Deaths, 1908-1953,” index and images, FamilySearch (https://familysearch.org/pal:MM9.1.1/XXS6-2QL : accessed 23 October 2013), Emma Duff, 07 Feb 1946; citing, reference Certificate; FHL microfilm 2372652.