Belair is a suburb in the south eastern foothills of Adelaide, South Australia at the base of the Mount Lofty Ranges. Before European settlement, the Kaurna people called the area of modern-day Belair "piraldi". One early European name for the area was Sleep's Hill, named after Samuel Sleep, a shepherd who came to South Australia in the 1830s. The origin of t…Belair is a suburb in the south eastern foothills of Adelaide, South Australia at the base of the Mount Lofty Ranges. Before European settlement, the Kaurna people called the area of modern-day Belair "piraldi". One early European name for the area was Sleep's Hill, named after Samuel Sleep, a shepherd who came to South Australia in the 1830s. The origin of the modern name "Belair" is uncertain. Gustav Ludewigs, who subdivided the area, may have named the suburb after Bel Air, Martinique, being his wife Maria's birthplace. Another theory is that it was named in 1849 after Eugene Bellairs, a Government surveyor who lived in the area.