With its beginning slightly predating the formation of the Alpine Club in London in 1857, the golden age was dominated by British alpinists and their Swiss and French guides. Prominent figures of the period include Lord Francis Douglas, Paul Grohmann, Florence Crauford Grove, Charles Hudson, E. S. Kennedy, William Mathews, A. W. Moore, Leslie Stephen, Francis Fox Tuckett, John Tyndall, Horace Walker and Edward Whymper. Well-known guides of the era include Christian Almer, Jakob Anderegg, Melchior Anderegg, Johann Joseph Benet, Peter Bohren, Jean-Antoine Carrel, Michel Croz, Ulrich Kaufmann and Johannes Zumtaugwald. Lucy Walker, sister of Horace, attained some notable firsts during the period, including the first ascent of the Balmhorn (1864), and later several first female ascents.