Benjamin served during the Civil War with Company "J", 11th Indiana Cavalry. On 3 April 1889 he filed for a Civil War Pension from his home in Texas.
From The Investigator, College Corner, Ohio, 5 August 1886: A Pleasant Occasion. On the morning of July 27 a line of carriages might have been seen wending its way to the pleasant home of Mr. Caleb Barnum, of Bath Tp., Indiana.
Mr. Barnum sat conversing with his brother, Mr. B. F. Barnum, from Honey Grove, Texas, who, with his wife, has been spending some weeks with relatives in this vicinity. As the first carriage load appeared, Mr. B. F. Barnum exclaimed, "Why there is sister Rena ─ and there is another carriage with sister Becky! Why, Caleb, have you plenty of provisions cooked? Monroe said he and his family were coming to-day ─ why there are more carriages. What does this mean?" Said Mrs. Caleb Barnum, "It means that you are sixty years old to-day, and they are coming to surprise you." It was a complete surprise to both Mr. and Mrs. Barnum. But it was the beginning of a very pleasant day for a company of ninety-one persons. Among those present, we saw Mr. George Harlan and family, of College Corner, Mr and Mrs. D. D. Barnum, from Billingsville, Mr. William Everson and family, Mrs. Rene Akers and family, from Mixerville, Mr. Jas. Doty and family, Mr. Sam'l Hitchner and family, Mr. T. B. Barkley and family, Jordan Lee, Sr., and wife, Jordan Lee, Jr., and family, from Lotus, Mr. and Mrs. Minor Lee, Mr. Simpson Lee and wife, Miss Smith, from Oxford, Mr. and Mrs. James Spiers, from Iowa, Mr. Wm. Brady, wife and daughter, from Riley, Miss Kennedey, from Covington, Ky., Miss Stamps, from Cincinnati, Mr. Monroe Wilson and family, Mrs. Ollie Shepherd and children, from College Corner, Mrs. Thos. McCullough and Miss Daisy McCullough, Mrs. Fye, from Oxford, Mr. Frank Gordon and wife, from Bunker Hill, Mrs. Elizabeth Brady, Mrs. Eva Brady and two children, Miss Brown, Mr. Riley Barnum and family, Miss Kate Barnum, from Darrtown, Miss Florence King, from Collinsville, Ohio, Misses Dessie and Effie Lackey, Masters Clinton and Truman Lackey, Miss Mary Floyd, Mr. Nathan Bourne and son, Miss Almira Bourne, Miss Lessie Schultz, Miss Millie Miller, from Mt. Carmel, Mr. Johnny Muddel and brother, from Peoria, Miss Pike, from Dakota.
The older members of the company renewed their youth in reminiscenses of the days when rail-roads and telegraphs were rare, when sewing machines, washing, reaping and mowing machines, to say nothing of the telephone, electric light, and many of the modern conveniences were unknown. A bountiful repast, prepared in the style for which the ladies of the Barnum connection are famous, was duly appreciated, after which Miss Pike read a poem she had written for the occasion. A copy of the.... [the remainder of the article is torn and missing].
His birth date was calculated from a newspaper article documenting a surprise birthday party given for him on 27 July 1886, his 60th birthday.