Alfred Gardère lived most of his life in Le Houga, Gers. He worked as a horse trainer and was well-known in Biarritz for having lent his name to a horse-riding school. He was in the French military from 1886 to September 1890. Gardère married Emilie Dolques (1869-1949) on 20 March 1896, in Bagnères-de-Bigorre (Hautes-Pyrénées).
The 1900 equestrian high jump gold medal was long attributed to Dominique Maxmilien Gardères, but more recent research by Stéphane Gachet has found that it was Alfred Gardère and that DM Gardères could not have been the gold medalist, as he died in 1898.