cattle thief
• (n.) One who steals and drives away cattle or beasts by herds or droves.
Ab·ac'tor (-tẽr) noun [ Latin , from abigere to drive away; ab + agere to drive.] (Law) One who steals and drives away cattle or beasts by herds or droves. [ Obsolete]
In old law, the term abactor was applied to one who stole and drove away cattle or beasts by herds or droves.