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A key figure in the rise of modern astrology, this British writer helped turn astrological ideas into books and magazines for a wide public audience. His work linked horoscope reading with character and personality, shaping how many people came to understand astrology in the early 20th century.

by Alfred H. Barley, Alan Leo
Born William Frederick Allan in Westminster on August 7, 1860, he became known as Alan Leo and built a lasting reputation as an astrologer, author, publisher, and theosophist. He is often described as one of the main founders of modern astrology, especially for the way he moved popular astrology away from strict prediction and toward the study of temperament and personal character.
Leo wrote extensively and reached readers through both books and publishing work, helping astrology find a broad English-speaking audience. His writing style aimed to make complicated ideas easier to approach, which helped his influence spread well beyond specialist circles.
He died in Bude, Cornwall, on August 30, 1917, but his impact remained strong after his lifetime. For many later readers and practitioners, his work became part of the bridge between older astrological traditions and the more psychological, personality-focused astrology that followed.