(born 1934), U.S. dancer. Jacques d'Amboise was an energetic dancer who skillfully interpreted both classical and character roles. He was born Joseph Jacques Ahearn in Dedham, Mass. At the age of 15 he joined the New York City Ballet and became one of its premier dancers and choreographers. He founded the nonprofit National Dance Institute in order to bring dance into the public school classroom. His film performances included roles in ‘Seven Brides for Seven Brothers' (1954) and ‘Carousel' (1956). (See also Ballet.)