This is my original concept for the Sapphire Island (names in Spanish)  scribbled in a piece of paper in my son's football class. I copied a few mon from real samurai clans as back in the day my plan was to create some for my own clans bit I gave up eventually. 

Some things I didn't quite like from the first drawing of the island:

• Terrain types are too separated in segments. Looks more Catan than Otaidokan. 
• Each clan occupied a single territory making it too boring. 

Eventually, it served as a base for this: