You have minimal information listed for Abraham Kaplan (c2204371).
The translation of his monument was provided to me by Ethel and Mendel Harris, another cousin and is as follows:

A SORROW FOR WHAT HAS BEEN LOST
BUT NOT FORGOTTEN
R. ABRAHAM ZELIG SON OF Z'AV
FROM THE SEED OF AARON (THE KOHAN)
LOVED (G-Ds) CREATURES AND BROUGHT
THEM CLOSER TO THE TORAH
AND AHRON WAS 75 YEARS OLD
ON LEAVING THE ANXIETY OF THIS WORLD
10th OF IYAR 5686

In summary, Abraham Zelig Kaplan, born abt. 1850, died April 24,1926 (Kohen Symbol).

Supplied by Richard A. Kallan