The following information was found in the History of the Sleeper Family of Waco and McLennan County, Texas by John Sleeper in 1930:

Gardner S. Sleeper was born at Liberty, Amite County, Mississippi, January 27 [17], 1829. Married Miss Nancy Daniels in 1850 [Oct. 4, 1852, Amite Co., Miss.]. By this marriage had 3 children:

Emma Sleeper,
Sarah Hoyt Sleeper, and
Gideon Daniel Sleeper.

Nancy Daniels Sleeper died in Amite County, Mississippi, in 1859 [Jan. 14, 1860, Amite Co., Miss.].

Gardner S. Sleeper married the second time in Amite County, Mississippi, Miss Isadore E. Causey on June 12, 1860. By this marriage had 6 children:

Nannie C. Sleeper,
Theodore Sleeper (female),
Isadore Graves Sleeper,
Pattie Martha Sleeper,
Julia Addie Sleeper, and
Louis Gardner Sleeper.

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This is an obituary for Gardner Southworth Sleeper from The Day (Waco, Texas) on January 15, 1890, page 8:

Obituary

MR. G. S. SLEEPER.

Mr. G. S. Sleeper, one of the most respected, successful and intelligent farmers of McLennan county, died at 4 o'clock Tuesday morning at his residence at Hewitt, six miles south of the city. Mr. Sleeper's illness was pneumonia and of brief duration, about five days. The funeral services will take place at 11 o'clock this morning, Rev. C. W. Peyton officiating, at the family residence. After the services the remains will be brought to Oakwood cemetery for interment. Friends in the city unable to go to the residence can meet the remains at Oakwood. Mr. Sleeper was 61 years of age. He came to McLennan county thirteen years ago from Amite county, Mississippi.

He was a brother of the late Hon. F. [Fabius] H. [Hoyt] Sleeper, of Waco, and is survived by a wife and several children. Among his relatives in this city are Messrs. John and William Sleeper, R. L. Stribling and others. The deceased was a man of high character and his death will be quite generally regretted. As a mark of respect the establishment of Messrs. Sleeper, Clifton & Co., was closed yesterday and will not be opened until 1 o'clock this afternoon.

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According to family records and Amite County, Miss., 1699-1890, Volume III, Gardner Southworth Sleeper was a Confederate soldier with Company I, 4th Mississippi Cavalry (formerly Stockdale's Battalion).

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This is an obituary for Gardner Southworth Sleeper from the Waco Daily News (Waco, Texas) on January 14, 1890, page 4:

DIED

This morning at 5 o'clock, at his residence, six miles south of Waco, Mr. G. S. Sleeper, aged 61 years. Mr. Sleeper has been a citizen of McLennan County for many years and has made many friends who will grieve to hear his sudden death. He was stricken down with pneumonia and was ill only a few days.

The funeral will take place to-morrow at 11 o'clock a.m. from the family residence near Hewitt. Friends and acquaintances are invited to attend. Interment at Oakwood cemetery in Waco.

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This is an obituary for Gardner Southworth Sleeper from the Waco Weekly News (Waco, Texas) on January 17, 1890, page 1:

DIED

On the 14th at 5 o'clock, at his residence, six miles south of Waco, Mr. G. S. Sleeper, aged 61 years. Mr. Sleeper has been a citizen of McLennan County for many years and has made many friends who will grieve to hear his sudden death. He was stricken down with pneumonia and was ill only a few days.

The funeral will take place to-morrow at 11 o'clock a.m. from the family residence near Hewitt. Friends and acquaintances are invited to attend. Interment at Oakwood cemetery in Waco.

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The following information was found in the History of the Sleeper Family of Waco and McLennan County, Texas by John Sleeper in 1930:

IN LOVING MEMORY OF MY FATHER GARDNER S. SLEEPER

He was born on a farm in Amite County, Mississippi, in 1829, where he attended the county schools and grew to manhood. As a boy, the first money he ever made was working at eight dollars a month and his board. He saved five out of the eight. He was a farmer by occupation. His father, when he died left him some money with which he bought him a farm. When the Civil War broke out he owned a farm of five hundred acres on the Amite River five miles south of Liberty which he cultivated with negroes. His children were all born on this farm except one.

In 1876 he came with his family to McLennan County, coming through by wagon with all of his household possessions. I recall the wagon that I rode in was called a Schooner drawn by three large mules. It took several weeks to come through. He had bought a prairie farm of four hundred acres six miles south of Waco where we settled. The country was thinly settled at that time. He built a school house on his farm which soon became a community center where the people would come and have their debating society, neighborhood talks and on Sundays a Sunday School for the children.

He was very active-had something for all to do that was on the place, was a fine farmer, loved his neighbors and his church, took great interest in all community activities, contributing liberally to them. He was kind and good to his family. I was very close to him as he would have me to look after errands for him. I loved him much as all of us did. His passing away at the time he did was a great sorrow to us.

Isadore Sleeper Ligon.

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Gardner Southworth Sleeper was born Jan. 17, 1829 in Liberty, Miss., the son Gideon and Margaret McDowell Stribling Sleeper. Gardner S. Sleeper was received into the membership of Bethany Presbyterian Church of Amite County, Miss. on October 4, 1859. He married Isadore Elizabeth Causey on June 12, 1860. He was a Civil War veteran, serving in the Miss. Cavalry. He was a member of the Presbyterian Church. His brother Fabius Hoyt Sleeper was a pioneer attorney and judge in Waco.