The Grant diary records the daily activities of the Grant family of Old Ridge, St. Stephen Parish, Charlotte County, New Brunswick, between 29 January 1827 and 30 May 1827. The diarist mentions the wedding of sister Marjory, attending church meetings, work done on the farm, visits to and from family and friends, the weather, and community events.

There is also a brief memo containing genealogical information on the Grant family which was probably compiled by Mr. Maxwell.