This is the tombstone of Maria Ursula Hiller, located in row 10 of Kessler Cemetery, Liberty Township, Mercer County, Ohio. The marker is inscribed:
Mary R [?]
G & C
Aug. 9, 1888
Aged 7 mo
According to Zion Chatt’s records, Maria Ursula Hiller was born to George and Catherine (Alt) Hiller on 9 January 1888 and was baptized 8 Jul 1888, with her grandparents Friedrich and Ursula Alt as sponsors.
Her mother Catherine (Alt) Hiller was the second wife of her father George Hiller. George’s first wife Caroline (Brecheisen) died 20 May 1884 and George married Catharine Alt on 30 November 1884. Catharine was the daughter of Friedrich and Ursula (Koch) Alt.
Maria “Mary” Hiller’s birth is also recorded in Mercer County, Ohio, probate and indicates that she was born in Liberty Township. 
Mary Ursula Hiller, was likely named after her two grandmothers—her paternal grandmother Mary (Müller) Hiller and maternal grandmother Ursula (Koch) Alt.
Mary only lived a few months. Her death and burial are recorded at Zion Chatt but her death record does not appear in the Mercer County Probate records. Mary died 9 August 1888, the same year she was born, and she was buried on the 11th.
Although Mary did not live to be enumerated in a census, the 1900 U.S. census indicates that two of three children born to Catharine (Alt) Hiller were living, indicating that she had lost one child. 
Mary Hiller had two brothers, Heinrich Friedrich (1886-1966) and John (1890-1981).
Mary is buried next to her father’s first wife, Caroline (Brecheisen) Hiller.
 “Ohio, County Births, 1841-2003,” database with images, FamilySearch (https://familysearch.org : accessed 19 Feb 2016), Mary Hiller, 9 Jan 1888; from Liberty Twp, Mercer, Ohio, Vol. 2, p.87; from FHL microfilm 914953.
 1900 U.S. Census, Liberty, Mercer, Ohio, ED 85, p.2B, dwelling 41, family 43, George Hiller; digital image by subscription, Ancestry.com (www.ancestry.com : accessed 27 Jan 2016); from FHL microfilm 1241304, from NARA microfilm T623, roll 1304.