Bess
Bess meaning: Form of Elizabeth. God's oath.
Bess origin: Hebrew
Bess gender: Female

Bessie
Bessie meaning: Form of Elizabeth. Consecrated to God.
Bessie origin: Hebrew
Bessie gender: Female

Bessy
Bessy meaning: Diminutive of Elizabeth, meaning my God is bountiful, or God of plenty, used since the 16th century. Sometimes used as an independent name.
Bessy origin: English
Bessy gender: Female