α. 1600s 1800s barbirousa, 1600s– babiroussa, 1700s–1800s babyrossa, 1700s–1800s babyrouessa, 1700s– babyroussa, 1800s babeeroussa, 1800s barbyroussa, 1800s– babirousa, 1800s– babirusa, 1800s– babirussa, 1800s– babyrousa, 1900s babiroessa (rare).
β. rare 1800s babirousse, 1900s babirusse.