This is the tombstone of Adam J. Buechner, located in row 9 of Zion Lutheran Cemetery, Schumm, Van Wert County, Ohio. The marker is inscribed:
26 Apr. 1822
11 Maerz 1885
62 J, 10 M, 15 T
Text: John. 13 v.7
Adam Johann Buechner was born in Hainstadt, Hessen Darmstadt, on 26 April 1822, according to Zion Schumm’s records.
Adam Buechner was married twice. His first wife was Margaretha “Rosina” (Grund) and they married 9 September 1858 at Zion Schumm.
Adam and Rosina (Grund) Buechner had 2 children:
Johann Jakob Martin “Jacob J” (1859-1917), married Caroline Reidenbach
Johann Friedrich (1860-1929), married Caroline C. Grote
The Adam Buechner family in 1860: Adam, 38; Rosina, 21; and John, 1. Adam was a shoemaker. His place of birth is shown as Hesse Darmstadt and Rosina’s as Wuerttemberg. Son John was born in Ohio. 
Rosina (Grund) Buechner died 11 February 1861 and is buried in row 3 of Zion Schumm’s cemetery.
Widower Adam Buechner married widow Anna Barbara (Pflueger) Schumm on 17 September 1861. Anna Barbara (Pflueger) (1822-1908) was the widow of immigrant Ludwig “Louis” Schumm, who died 22 August 1855. Widow Anna Barbara had seven living children from her marriage to Louis Schumm at the time of her marriage to Adam Buechner. [Louis and Anna Barbara Schumm were my second and third great-grandparents.]
Adam and Anna Barbara (Pflueger) had two children:
Marguerite Catharine Marie Buechner (1863-1940), married Fred G. Kreiselmeyer
William A. Buechner (1865-1955), married Katharine Magdalena Schumm
The Adam Buechner family in 1870: Adam, 48; Barbara, 47; John, 20; Rosina, 22; Hannah, 17; Jacob, 11; Frederick, 9; Margaret, 6; and William, 4. Adam was a farmer and both he and Barbara were born in Germany. 
The Adam Buechner family in 1880: Adam, 58; Barbara, 58; John G, 30, stepson; Margaret M, stepdaughter; and William MA, 14, son. Adam was a farmer. They were enumerated next to Zion Schumm’s minister Rev. Seemeyer and next to Friedrick and Magdalena Schumm, and likely were neighbors. 
Adam Buechner died from lung and asthma problems at 2:00 in the morning of 11 March 1885. He was 62 years, 10 months, and 15 days old and was buried on the 13th.
 1860 U.S. Census, Willshire, Van Wert, Ohio, p.426, dwelling 1082, family 1076, Adam Bickner; digital image by subscription, Ancestery.com, viewed 21 Feb 2022.
 1870 U.S. Census, Willshire, Van Wert, Ohio, p.439A, dwelling 134, family 135, Adam Buechner; digital image by subscription, Ancestry.com, viewed 21 Feb 2022. [Note that all the children’s surnames are shown as Buechner, some of them are Schumms, from Anna Barbara’s first marriage to Louis Schumm]
 1880 U.S. Census, Willshire, Van Wert, Ohio, ED 154, p.450C, family 130, Adam Beichner; digital image by subscription, Ancestry.com, viewed 21 Feb 2022.
Did someone make a subtraction error on this stone?
Looks like it! I come up with 13 days when I calculate it. I had not noticed that. I guess that shows anything can contain an error, even things chiseled in stone! Thanks for writing.
Actually, I was looking at the number of years. 1822 to 1885 is 63, not 83.
Actually, I was looking at the difference in the years. It seems to be 62/3 and not 82/3 as stated on the stone.
Thanks for catching that typo! The stone does say 62.