After finding the MacNachtan's in the OCFA index, I contacted volunteer Leigh LeBlanc who provided transcriptions.
Stone 961
MacNACHTAN (This is how it’s spelled in the transcript)
Edmund A. MacNachtan born in Scotland April 25, 1825
Died at Cobourg July 22, 1891
Elizabeth MacNachtan born in Scotland March 11, 1828
Died at Cobourg December 25, 1909
Sarah MacNachtan born October 27, 1853 – died February 20, 1867
Col. Neil F. MacNachtan, CVO 1850 – 1928
His wife Jean Hervey Lawder 1854 – 1909
Kathleen Hervey MacNachtan 1882 – 1909
William MacNachtan born November 22, 1862 died Janaury 17, 1863
Mahor Edmund L. MacNachtan 1887 – 1947