Where did the name Satchmo originate?

The name "Satchmo" is believed to have originated from Louis Armstrong's childhood nickname, which is derived from "satchel mouth," a reference to his large lips and wide grin. This nickname was first used by a group of musicians in New Orleans and later became synonymous with Armstrong himself. He embraced the name, and it became a beloved moniker as his fame grew in the world of Jazz Music.