Leo Hyland was born in Liverpool, Lancashire, England on 6 March 1893, later being baptised on 25 March at St Anthony's Roman Catholic Church, Scotland Road.
He was the son of an English-born father of Irish ancestry, John Charles Hyland (1864-1926) and an Irish-born mother, Catherine Bergin 1 (1864-1923) who were married on 1 July 1889 in Our Lady of Reconciliation Church, Liverpool. His father, a ship's baker and later a coal porters' foreman, hailed from Birkenhead, Cheshire whilst his mother was a native of Mountmellick, Queen's County (modern-day Co Laois) in the Irish midlands. They produced a total of four children, losing one in infancy. Their surviving children, besides Leo, were: John Charles (b. 1891) and Thomas (b. 1895).
Leo and his family moved to Southampton not long after his birth and his brother Thomas was born in that city in 1895. When the family appeared on the 1911 census they were living at 34 Threefield Lane, St Mary, Southampton and Leo's father was still, at this time, described as a ship's baker and bread-maker. Leo seemingly went to sea when he came of suitable age and he would be absent from the family home when the 1911 census was conducted. His family, at that time, were listed as living at 55 Orchard Place, St Mary, Southampton. Both his brothers John and Thomas were still at home and were described as a railway clerk and telegraph messenger respectively.
When he signed-on to the Titanic, on 4 April 1912, Leo gave his address as 55 Orchard Place, (St Marys, Southampton) and as a third class steward he could expect monthly wages of £3, 15s. His previous ship had been the New York, the same ship that Titanic had a near-collision with in the Test whilst departing Southampton.
Hyland was rescued in lifeboat 11 and would later make a sketch of the ship as he saw her sinking.
Leo later returned to England and continued his work at sea, later retiring in the 1960s. He was married in Southampton on 10 August, 1923 to Maria Ludovica Delen (1887-1972). During the 1950s he corresponded with Walter Lord during his research for A Night to Remember and he frequently gave interviews regarding the subject of Titanic in local media.
Leo continued to live in Southampton until his death on 14 June 1974 aged 81.