Alfred Ernest Geer was born in Southampton, Hampshire, England in 1886 and his birth was registered in the first quarter of that year. He was the son of Alfred Lewis Geer (1851-1908) and Elizabeth Jane Culverwell (1855-1915).His father was from Piddinghoe, Sussex and his mother from Southampton and they married in the latter in 1873.

 Alfred had eleven known siblings: Richard John (b. 1875), William Edward (b. 1877), George Lewis (b. 1878), Ralph Fuller (b. 1879), James Thomas (b. 1881), Alice Eliza (b. 1883), Grace Ann (b. 1884), Rachel Frances (b. 1887), Philip Culverwell (b. 1889), Walter Andrew (b. 1891) and Charles Oswald (b. 1893).

On the 1891 census Alfred and his family are living at 4 Dover Street, St Mary, Southampton and his father is described as a labourer. The family are listed at 5 Guildhall Terrace, Southampton on the 1901 census and Alfred's father is now described as a coach porter. Alfred isn't listed on this census for reasons unknown--he may have already commenced a career at sea and is also believed to have seen military service. Alfred's father passed away in 1908 and on the 1911 census Alfred, his widowed mother and two brothers Richard and Philip, are listed at 23 Bond Street, Northam, Southampton. Alfred is listed as unmarried and, like his brothers at the same address, is listed as a sea fireman.

Alfred was married on 29 April 1911 in St Augustine's Church, Northam, Southampton to Edith Ann Littlefield (b. 9 June 1889 in Tichbourne, Hampshire, daughter of Mary Ann Littlefield). Alfred and Edith would have no children.

When Alfred signed on to the Titanic he gave his address as 2 Stamford Street, Chapel, Southampton and his last ship had been the Olympic. Geer and his colleagues Lloyd, Kinsella, Witt, Black and Hosgood were taken on at the last moment after six of the "signed-on" crew arrived late for the sailing.

Alfred was lost in the disaster. His body if recovered was never identified. He was remembered on a memorial in St Augustine's Church, Southampton and on his father's headstone in The Old Cemetery, The Common, Southampton.

His widow Edith was remarried in Southampton in 1916 to Ernest A. Baker and had two children: Daisy (1918-1919) and James (b. 1921). What became of Edith in later years is uncertain.