A national emblem is a symbol that represents a nation. It may or may not appear on the national flag. It is usually something from the natural world, eg. an animal or bird, but can be any object.
The official national emblems of nations of the world in alphabetical order :
... patients at the leper colony (see Kalawao County, Hawaii), he contracted the disease, from which he died at the colony.
He is the patron of lepers and outcasts, and was ...