This is the tombstone of Anna Barbara (Bollenbacher) Allmandinger, located in row 6 of Kessler [aka Liberty] Cemetery, Mercer County, Ohio. The marker is inscribed:
Wife of John W.
Anna Barbara Bollenbacher was born in 1864 according to her tombstone. She was the daughter of George and Anna Barbara (Albrecht) Bollenbacher.  The 1900 census indicates she was born September 1867 in Ohio,  but other census enumerations indicate she was born about 1864-1865.
Anna grew up in Liberty Township, Mercer County, Ohio, where she was likely born. In 1870 the Bollenbacher household consisted of George, 39, Anna, 34. Jacob, 16, Caroline, 14, Henrietta, 12, Charles, 10, Louisa, 7, Anna, 5, George, 3, and Frank, 10 months. Anna’s parents were both born in Prussia and her father was a farmer. All of the Bollenbacher children were born in Ohio. Daughter Anna was born about 1865 according to this record. 
Anna was enumerated as 15 years of age in 1880, making her year of birth about 1865. In their Liberty Township household was George J, 49, Barbara, 44, Louis, 20, Louisa, 17, Anna, 15, George, 13, Frank, 11, Samuel, 8, Mary, 5, and Edward, 1. 
Anna Bollenbacher married John W. Allmandinger on 29 October 1889 at the home of her parents. They were married by Zion Chatt’s pastor, Rev. Chr. Reichert, with Jacob Allmandinger and Barbara Kühm serving as witnesses.
In 1900 John W. and Anna Allmandinger lived in Chatt with their five children. In the household was John, 37, Barbara, 32, Amelia, 9, Alvina, 7, Hulda, 5, Otto, 2, and a 2-month old son whose name was not given. That infant was eventually named Samuel Ludwig. This record indicates that Barbara had given birth to five children and all five were living. John’s occupation was a “sawmiller’ and he ran a sawmill in Chatt. 
Anna’s husband John died of lockjaw on 28 February 1906, at the age of 43 years, 3 months, and 2 days. 
John’s widow Anna was left with five children to raise and another on the way. Their youngest child was born about three months after John’s death.
The Allmandinger family remained in Liberty Township for a few years after John’s death but moved to Fort Wayne, Indiana by 1918.  
In 1920 Anna was living in Fort Wayne, Indiana, with five of her children, her son-in-law, two grandchildren, and a nephew: Anna, 55, head of household and widow; Otto, 22, son; Samuel, 29, son; Wilma, 13 daughter; Huldah Smith, 26, daughter, widow; Constance Smith, 9/12, granddaughter; Joseph C Reichert, 27, son-in-law; Alvina Reichert, 27, daughter; Donald C Reichert, 0, grandson; and George Wm Shanebarger, 29, nephew. Anna’s daughter Hulda (Allmandinger) Smith was also widowed by 1920. Anna’s son Otto Allmandinger was a fireman for the railroad. Son Samuel worked in a factory doing electrical transformer work. Daughter Hulda was a coil winder in a factory. Son-in-law Joseph Reichert was a machine operator in a paper factory. Nephew George William Shaneberger was a brakeman for the railroad. 
Find a Grave.com indicates Anna died 13 March 1922, at the age of 57. She likely passed away in Fort Wayne. This record indicates that she was born 1 September 1864 in Mercer County, Ohio. 
John and Anna have separate tombstones that are side-by-side in Kessler Cemetery.
John and Anna (Bollenbacher) Allmandinger had the following children:
Emilie “Amelia” Etha (1890-1943), married Carl Huff
Alvina Katharine (1892-1965), married Joseph C. Reichert
Hulda Karoline (1894-1935) married Joseph J Schmitt/Smith
Otto George (1897-1966), married Joila G. Hite
Samuel Ludwig (1900-1983), married Elizabeth Catherine Travers
Johannita “Wilma” (1906-1978), married Dimmich
 “Ohio, County Marriages, 1789-2013,” database with images, FamilySearch (https://familysearch.org : accessed 11 Oct 2015), George Bollenbaugh and Ann Albright, Jul 1853; citing Mercer, Ohio, Marriage Consents 1829-1853; from FHL microfilm 1871577.
 1900 U.S. Census, Liberty, Mercer, Ohio, ED 85, p.10B, dwelling 190, family 196, John W. Allmandinger; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 4 Oct 2015); from FHL microfilm 1241304, from NARA microfilm T623, roll 1304.
 1870 U.S. Census, Liberty, Mercer, Ohio, p.150A, dwelling 129, family 116, George Bolenbaugh; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 11 Oct 2015); from FHL microfilm 552742, from NARA microfilm M593, roll 1234.
 1880 U.S. Census Liberty, Mercer, Ohio, ED 188, p.474C, dwelling 52, family 55, George J. Bollenbaugh; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 11 Oct 2015); from NARA microfilm T9, roll 1048.
 “Ohio, County Death Records, 1840-2001,” database with images, FamilySearch (https://familysearch.org : accessed 4 Oct 2015), John Allmandinger, 28 Feb 1906; citing Mercer County, Ohio Deaths, Vol 1-2, p.256; from FHL microfilm 914954.
 1910 U. S. Census, Liberty, Mercer, Ohio, ED 119, p.17A, dwelling 379, family 330, Amie Allmindger; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 12 Oct 2015); from FHL microfilm 1375227, from NARA microfilm T624, roll 1214.
 World War I Selective Service System Draft Registration Cards, 1917-1918, Allen, Indiana, Otto George Allmandinger; database on-line, Ancestry.com (www.ancestry.com : accessed 12 Oct 2015); from NARA M1509, roll 1503885, Draft Board 3.
 1920 U.S. Census, Fort Wayne, Ward 6, Allen, Indiana, ED 61, p.12B, Anna Allmendinger; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 4 Oct 2015); from NARA microfilm T625, roll 422.
 Find a Grave.com (www.findagrave.com : accessed 12 Oct 2015); Anna Barbara Bollenbacher Allmandinger memorial #29379255.