Clan Keldau, a Mandalorian clan of old, flourished during the era of the Mandalorian Crusades, as recorded in time. This clan achieved considerable fame within Mandalorian society due to the numerous skilled combat trainers it produced. Their clan sigil was the well-known image of a mythosaur skull. Despite eventually dying out, the legacy of Clan Keldau lived on. Tor Vizsla, the founder and leader of the extremist group Death Watch, acknowledged the clan's significance in Mandalorian history within his writing, Ba'jurne Kyr'tsad Mando'ad.
The initial mention of Clan Keldau within Star Wars canon occurred in the 2013 bounty hunter sourcebook, The Bounty Hunter Code: From the Files of Boba Fett, which was co-authored by Daniel Wallace, Jason Fry, and Ryder Windham.