Billie-Jo Is A Feminine Name Of English And American Origin With German And Hebrew Roots. It Acts As A Blend Of Billie And Jo, Giving Baby Double The Amount To Work With. Billie, An Adorable Nickname Of Wilma, Translates To “resolute Protector,” While Jo, Short For Joanne Or Joan, Translates To “God Is Merciful.” Whether You Want Baby To Celebrate Your Faith Or Build Their Unique Shield, The Name Billie-Jo Will Make For Plenty Of Inspiration.