From Fallen London Wiki
The Calico Knight is the alias of the Licentiate you kill to become a Licentiate. The thing in his pocket is most likely <a href="/wiki/A_List_of_Aliases,_Writ_in_Gant" title="A List of Aliases, Writ in Gant"><img alt="" src="/w/images/thumb/6/6b/Aliaslist.png/20px-Aliaslist.png" decoding="async" width="20" height="26" srcset="/w/images/thumb/6/6b/Aliaslist.png/30px-Aliaslist.png 1.5x, /w/images/thumb/6/6b/Aliaslist.png/40px-Aliaslist.png 2x" /></a> <a href="/wiki/A_List_of_Aliases,_Writ_in_Gant" title="A List of Aliases, Writ in Gant">A List of Aliases, Writ in Gant</a>.