Helena appears in the 1891 census married to George - see my web site www.lawsons.ca for marriage date.

She does not seem to appear in earlier census under Helena, but maybe Eleanor

1871, German, district 3, schedule 100
Thomas Harrison, head, married, 40, stone mason, Lezayre
Jane, wife, married, 38, Ireland
John, son, unmarried, 12, scholar, Peel
Rebecca, daughter, unmarried, 9, scholar, Peel
Eleanor, daughter, unmarried, 7, scholar, Peel
William R, son, unmarried, 5, scholar, Peel
James, son, unmarried, 3, scholar, Peel
Hugh H, son, unmarried, 2, Peel
Christian, daughter, unmarried, 5 months, infant, Peel