OAG, William | listed as a cooper in Town of Woodstock Directory, c.1852 | Shenston (1852), page 128
O’BRIEN, Henry | listed as a tailor in Village of Ingersoll Directory, c.1852 | Shenston (1852), page 134
O’BRIEN, James | first clerk for East Nissouri Township, 1822 ; one of the first assessors for East Nissouri Township, 1822 ; seconded a motion that the "next town meeting be held at the house of James Howard" on Jan. 1st, 1822 | Shenston (1852), page 200
O’BRIEN, James | listed in an 1822 assessment roll for East Nissouri Township with 195 acres uncultivated, 5 acres cleared and with 3 cows as livestock | Shenston (1852), page 200
O'BRIEN, William | an Ensign in Oxford Militia, 1824 | Shenston (1852), page 106
OBERHOLT, Michael | enumerator for Blandford Township during 1852 Census | Shenston (1852), page 33
OLIVER, Adam | school trustee for Village of Ingersoll, Jan 1852-? | Shenston (1852), page 131
OLIVER, Adam | listed as a carpenter in Village of Ingersoll Directory, c.1852 | Shenston (1852), page 134
OLIVER, Thomas | listed as a merchant in Town of Woodstock Directory, c.1852 | Shenston (1852), page 128
OLIVER, William | assistant school master at Woodstock Grammar School, c.1852 | Shenston (1852), page 118
OLIVER, William | assessor for West Zorra Township, 1852 | Shenston (1852), page 178
OLMSTEAD, Oliver | taught "first class" during Board of Public Instruction’s first and second years, 1851-1852 | Shenston (1852), page 113
ORR, Edward | Township Superintendent (of schools) for East Oxford Township, 1845-1846 | Shenston (1852), page 80
OSWELL, James | a Justice of the Peace for District of Brock, Aug. 1842-? | Shenston (1852), pp. 87, 88
OSWOLD, James | a Justice of the Peace for District of Brock, Sep. 1849-? | Shenston (1852), page 88
OUTRAM, William | listed as a shoemaker in Town of Woodstock Directory, c.1852 | Shenston (1852), page 128
OVERHOLT, Mr. | suffered a fire at his brick tavern on Plank Road, about six miles east of Woodstock, 1852 | Shenston (1852), page 113
OVERHOLT, Michael | a Justice of the Peace for District of Brock, Sep. 1849-? | Shenston (1852), page 88
OVERHOLTS, Nicholas | a school trustee, ____ Oxford Township, 1839 | Shenston (1852), page 79
OVERHOTT, Mich. | assessor for Blandford Township, 1840, 1842, 1846, and 1848-1849 | Shenston (1852), page 193
OVINGTON, Mrs. | listed in Village of Ingersoll Directory, c.1852 | Shenston (1852), page 134