Where does “Cisco” come from?

Cisco is a shortening of San Francisco, borrowed from Spanish San Francisco, a place name of religious origin meaning "Saint Francis."

Ancestry of “Cisco”, step by step

Step	Language	Word	Meaning
1	French	ciscoette	Siscowet
2	Ojibwe	siscowet	cooks itself

Cisco — Etymology, Origin & Word History | Etymology Explorer