What is "leadbeater's"

"Leadbeater's" commonly refers to Leadbeater's possum, but may refer to several eponymous species:

• Leadbeater's possum, (Gymnobelideus leadbeateri). Named after John Leadbeater
• Southern ground-hornbill, (Bucorvus leadbeateri). Named after Benjamin Leadbeater
• Major Mitchell's cockatoo, or Leadbeater's cockatoo (Lophochroa leadbeateri). Named after Benjamin Leadbeater.
• Violet-fronted brilliant (Heliodoxa leadbeateri). A hummingbird named after Benjamin Leadbeater.