Edmund de Lacy was a notable figure in medieval England, known for his role as a nobleman and landowner. He belonged to the de Lacy family, which held significant estates, particularly in Yorkshire. His lineage can be traced back to the 12th century, and he played a part in the political and social dynamics of his time. As a member of the English nobility, Edmund de Lacy was involved in various military and administrative duties. He participated in the Crusades and was recognized for his contributions to the Kingdom of England. His legacy is tied to the feudal system that characterized medieval society.