William Henry Campbell was born in Belfast, Ireland in the closing months of 1890.
He was the son of William Campbell (b. 1845), a seaman, and his wife Sarah, née Hawthorne (b. 1847). His father was apparently from Belfast whilst his mother seemingly hailed from Island Magee near Larne in Co Antrim. The couple were married in Belfast in 1870 and went on to have eight children, losing two in infancy. Their known children, besides William, were: Sarah (b. 1876), Mary (b. 1878), Robert John (b. 1883) and Jane (b. 1886).
The 1901 census shows William and his family living at 47 Spamount Street in the Dock Ward of Belfast City. By the time of the 1911 census, the family have shifted to 45 Earl Street in Clifton, north Belfast and William is described as a joiner. The family later moved to 28 Earl Street.
William was one of the nine-strong "guarantee group" of Harland and Wolff employees chosen to oversee the smooth running of the Titanic's maiden voyage. He, like the rest of his counterparts, died in the sinking. His body, if recovered, was never identified.
William Campbell died in the sinking. His body, if recovered, was never identified. His estate, worth £10, was administered to his father William on 28 March 1913.