Verona Cemetery transcription
McKnight, John died Dec 10 1894 aged 70 years
Olive Godfrey, his wife 1880--1909
OCFA indicated McKnights - John, Olive, Oliva A, Catharine, Isabella
Only one John was mentioned and he is married to Olive Godrey - possibly the son of your John and Isabella?
I don't have the OCFA reference for Isabella but she may be the d/o John and Olive as ancestry shows she married Jacob Walroth and he is buried in Verona Cemetery.
1861 Census district 36 Hinchenbrook pg 11
John McKnight, farmer, Ireland, 38, Olive 31, Andrew 13, John 9, Isabella 7, Robert 5, Warren 2
1881 Census Hinchinbrooke, Addington, Ontario
NA Film Number C-13236,District,118,Sub-dist H,Pg #27
John MCKNIGHT, M, Irish, 57, born Ireland,Farmer, E. Meth
Olive A. MCKNIGHT, M, English, 51, Ontario, E. Methodist
Robert MCKNIGHT, Irish, 24, Ont, Farmer, E. Methodist
Mary J. N. MCKNIGHT, Irish, 20, Ontario, E. Methodist
Chester G. MCKNIGHT, Irish, 16, Ont,Farmers Son,E. Meth
Elizabeth MCKNIGHT, Irish, 14, Ont,School, E. Methodist
Olive A. MCKNIGHT, Irish, 12, Ontario, School, E. Meth
Sylvenus MCKNIGHT, Irish, 11, Ontario, School, E. Methodist
Death Reg
5034 John McKnight, died June 10 1894, m, 70 years 7 mths , farmer, born Ireland, both legs broke ?illegible, 2 months, Dr Lockhart, Methodist,EG? McKnight.
12254- Olive McKnight, f, Eng, died May 18 1909, b June 23, 1830, 78 yrs 11 months, Hinchenbrook, widow, d/o Warren Godfrey born US and - Hinckley born Wolfe Island, Dr McCarter, Verona
Good luck