Were there any famous or notable leech collectors in history?

Yes, there were several famous or notable leech collectors in history. One such collector was Dr. François-Joseph-Victor Broussais, a French physician who collected and studied a variety of leech species. Another notable collector was Dr. Jean-Baptiste Lamarck, a French naturalist who studied and collected leeches during his travels. Additionally, Dr. Stephen Maturin, a character in the popular novel series "Master and Commander" by Patrick O'Brian, was also a leech collector.