Presenting himself as a Cherokee, Long Lace gained entry to the famous Carlisle Indian School in Pennsylvania. As "Sylvester Long Lance" he fought in the Canadian Army during the First World War and then settled in Calgary. In the early 1920s he worked for several western Canadian newspapers.

Adopted by the Kainai (Blood) as Buffalo Child in 1922, he began a freelance writing career as Chief Buffalo Child Long Lance. In 1928 he published his fictitious "auto-biography," Long Lance, which won acclaim as a Blackfoot reminiscence of growing up in the last days of freedom on the plains. In 1930 he starred in The Silent Enemy, a feature film about northern Canadian Indigenous peoples before the Europeans.

Long Lance's fortunes turned as rumours of his true origins began circulating and early in 1932 he took his own life.