Numbers 31:8
And they slew the kings of Midian, beside the rest of them that were slain; namely, Evi, and Rekem, and Zur, and Hur, and Reba, five kings of Midian: Balaam also the son of Beor they slew with the sword.
Torrey's Topical Textbook—AKJV

Judges 8:5
And he said to the men of Succoth, Give, I pray you, loaves of bread to the people that follow me; for they be faint, and I am pursuing after Zebah and Zalmunna, kings of Midian.
Torrey's Topical Textbook—AKJV