Harry was the son of Thomas and Hannah Smith (née Hartshorn).
His father Thomas was born in Arnold in about 1859, the son of Henry Smith, a framework knitter. His mother Hannah was born in 1859, also in Arnold, the daughter of John Hartshorn who was also a framework knitter, and his wife Emma. Hannah was baptised at Arnold St Mary in early January 1860.
Thomas and Hannah were married at Arnold St Mary in October 1880 and had seven children who were all born in Arnold: William b. 1882, Emma b. 1883, Ethel b. 1886, Harry b. 1888, John birth registered 1892 (J/F/M), Arthur b. 1894 and Nellie b. 1898.
At the start of their marriage, Thomas and Hannah lived at Frosts Row, High Street, Arnold; Thomas was a framework knitter and Hannah a laundress. However, by 1891 they had moved to St Albans Road, Daybrook, and probably lived on Acton's Row, and continued to live there for most, if not all, their married life - Harry's CWGC record gave the same address for the couple.
All seven children were in the home in 1901: William a framework knitter, Emma a hosiery machinist, Ethel a laundress (as was her mother), Harry, John, Arthur and Nellie. However, by 1911 only four children were living with their parents: Harry and Arthur who were miners, John a framework knitter and the youngest child, Nellie, who was still at school.