In the 1881 census of Canada, Mosa, Middlesex West, Ontario.
Head Thomas Simpson, born 1837, Ontario, farmer, nationality English. Catherine Simpson, born 1836 Scotland. John Simpson, born 1865, Ontario. Neil Simpson, born 1867, Ontario. Joseph Simpson, born 1869, Ontario. George Simpson, born 1871, Ontario. mary Simpson, 10 months old, born 1880, Ontario. [The image is very faint, so some of the transriber’s results may be incorrect.]