Mr William McIntyre (Trimmer) was born in Southampton, Hampshire, England on 18 April 1890.

He was the son of Lawrence McIntyre (b. circa 1860) and Frances "Fanny" Holley (1859-1924), a native of Hampshire (1), who had married in Southampton in 1877. Details about his father are not clear but he is known to have worked at sea, possibly hailing from Liverpool.

William had three known siblings: John (b. 1877), Catherine Mary (b. 1880) and Annie (b. 1887).

William, his mother and sister Annie appear on the 1901 census living at 26 Lower York Street, Southampton. His mother was by now described as a widow but the fate of his father is not known. His mother was remarried in 1908 to George Sewell (b. 1858), a dock labourer originally from London. By 1911 William was still at home, living with his mother and stepfather at 11 Guilford Street, St Mary, Southampton and he was described as an unmarried dock labourer.

When he signed-on to the Titanic, on 6 April 1912, McIntyre gave his address as 20 Floating Bridge Road, Southampton. He had transferred from the Olympic and as a trimmer he received monthly wages of £5, 10s.

McIntyre is generally believed to have been among those who survived the sinking in waterlogged collapsible A. Upon his arrival in New York aboard Carpathia he was pictured with fellow survivors Pallàs i Castelló, John William Thompson and a wheelchair-bound Thomas Arthur Whiteley

He eventually returned to England and continued working at sea, serving for the duration of WWI. He was married in 1915 to Mary Jane Green (b. 1891 in Portsmouth) and had a son, William Frederick A. (1916-1990) but was widowed in 1918 when his wife died aged 27.

William was remarried in 1923 to Annie Bendell, née Wendes (b. 1899 on Isle of Wight), a young widow whose husband Frank Henry Bendell (b. 1893) had died in 1920, leaving her with a young son, Frank H. R. (b. 1917). She and William would have six children of their own: Laurence (1920-1979), Doris Emily (1923-2004, later Mrs Harold Burt), Elsie T. (b. 1926, later Mrs Albert Hinks), Ronald A. (b. 1929), Roy H. (b. 1931) and Annie P. (b. 1933, later Mrs Douglas Hall). The family made their home in Southampton but William was again made a widower when his wife Annie died in 1936 aged 37; he was never remarried.

William spent his final years living at 55 Warren Avenue, Southampton. He passed away in Ashurst Hospital on 26 July 1955 aged 65 and was buried in Southampton Old Cemetery (supposedly with his first wife) but his headstone has since fallen into a poor state of disrepair. As of 2015 several of his children are still residing in the Hampshire area.