In the Old Testament Zillah is the second wife of Lamech, Cain's offspring (Genesis 4:19: "And Lamech took unto him two wives, the name of the one was Adah, and the name of the other Zillah.")
Tsilla Chelton (1919-2012), French actress
Zillah/Tsila/Tzila/Tzillah means "shade" in Hebrew (see ZILLA)
Zillah, servant to Heathcliff in Wuthering Heights
Zillah Horsefall, in Shirley (1849) by CharlotteBronte; "nurse attending RobertMoore, a giant dram-drinker"
Zillah Keith, Millie's boisterous younger sister in the A Life of Faith book series
"Z is for Zillah who drank too much gin" (The Gashlycrumb Tinies)