In Diu Indo-Portuguese, the word ku is both a comitative and an instrumental marker (as well as an NP coordinator). In addition, the complex preposition jũt də '(together) with' also marks comitative relations (among other functions), but not instrumental.
Source: Cardoso 2009: 186
Source: Cardoso 2009: 159
Source: Cardoso 2009: 186
Source: Cardoso 2009: 186