This from my census records and from the Montgomery Co., IN. webpage:
1860 census, Brown Twp., Montgomery Co., IN., pg 95:
Warren Davis, 28, IN
Margaret, 24, OH
Sarah T., 2, IN
Hannah R., 2, IN

1870 census, July 16, Union, Montgomery Co., IN., pg 217 A
Warren Davis, 39
Margaret, 34
Sarah, 12
Hannah, 12
Mary, 9
Betty, 6
Laura, 4
Willie, 2

1880 census, Union, Montgomery Co., IN., pg 298 A
Warren Davis, 48, Farmer, born IN., father VA, mother Ky
Margaret, wife, 44, OH, parents OH
Mary J, dau, 18, IN
Bettie, dau, 15, IN
Laura B., dau, 13, IN
William, son, 12, IN
Alice, dau, 8, IN
Charles, son, 4, IN

Atlas of Montgomery County. (Chicago: Beers, 1878) p 53

DAVIS, Warren, PO Crawfordsville, Farmer and Stock Raiser, settled in this co. 1831.

Warren Davis, Jr.
Portrait and Biographical Record of Fountain, Montgomery & Parke Counties, 1893, Chapman Brothers.

Warren Davis, Jr., who is profitably managing a good-sized farm on Section 19, Union Township, is a native of Montgomery County, and was born in 1831 in one of the earliest established pioneer homes of Brown Township. His father, Thomas Davis, came here in 1830 form Shelby County, Kentucky, of which his parents, who were Virginians, were pioneers.

Warren Davis was taken to Ray when he was eight months old and there the family lived until he was six years old, when they returned to Brown Township. His home was there during the remainder of his boyhood and he was educated in its public schools. June 24, 1855, Miss Margaret Smith became his wife and in her he has a true helpmate. Her father Robert Smith was born in Virginia and went from there to Ohio, whence he came to Indiana and was one of the early settlers of this County. He was the father of ten children, of whom seven grew to maturity and three are still living: John, a resident of Ripley; Ellen, wife of Levi Wilcox, who resides near Crawfordsville; and Mrs. Davis, who was born December 8, 1837, and was ten years old when the father came to this County from her native Ohio.

The marriage of Mrs. Davis with our subject has brought them ten children, of whom two died in infancy: Nancy Elizabeth and Martha Ellen. Those that are living are: Sarah T and her twin sister, Hannah R., who were born December 28, 1858, the former now the wife of Telma Switzer, of Crawfordsville, and the latter the wife of Taylor Austin, of this County; Mary J., who was born September 12, 1861, and is the wife of E. W. Christ, who lives near Crawfordsville on the Green castle road; Betty F., who was born October 25, 1863, and is the wife of Fred Rogers, of Brown Township; Laura, who was born February 12, 1865, and is the wife of Fred Rogers, of Brown Township; Laura, who was born February 12, 1865, and is the wife of Samuel B. Demeret, of this County; William A., who was born November 12, 1867, and is a resident of this County; Alice E., who was born September 24, 1872, and is the wife of Edward Grimes, a farmer of this township, and Charles E., the youngest of the family, who was born March 21, 1875, is a student at school and still makes his home with his parents.

After his marriage Warren Davis first located in Brown Township on a farm of his father's and lived upon from 1855 to 1868, when he came with his family to the farm that he now occupies in Union Township. It comprises two hundred and ninety acres of good land, all well improved and provided with neat and substantial buildings and every convenience for farming. He derives a desirable income from its fertile and well-tilled acres.

Mr. Davis stands well in his community and his name is closely associated with its social and religious interests as a member of the Masonic fraternity and of the Baptist Church. His wife also belongs to the latter. Politically Mr. Davis affiliates with the Democrats.