His last name is often seen hyphenated ("Folch-Pi"). In the Spanish tradition of providing two identifiers, he often signed with both his paternal and his maternal last names. When he moved to America and married, he decided to hyphenate his paternal and maternal last names, so that his children would bear his full family heritage: "Folch-Pi". His last names are often mispronounced "Foltsch Pie" or "Folk Pie" but the correct Catalan pronunciation is "Folk Pea".