Mr. Mull was a founder partner of the Moote, Mull, and Boyd law firm of Kalamazoo, Michigan. By the mid-1950s, he was known to be deceased (The Beast under the Wizard's Bridge, 79).
Inspiration[]
The Isle of Mull is a Scottish island in the Inner Hebrides[1], and the word mull is an Anglicization of the Gaelic Maol, a term for a rounded hill, summit, or mountain[2].
The word also means to work (over) mentally; to cogitate; to ruminate[3].