Cassi
Cassi meaning: Abbreviation of Cassandra. Unheeded prophetess. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded.
Cassi origin: English
Cassi gender: Female

Cassia
Cassia meaning: Champion.
Cassia origin: Greek
Cassia gender: Female

Cassian
Cassian meaning: Curly haired.
Cassian origin: Irish
Cassian gender: Male

Cassidy
Cassidy meaning: Clever.
Cassidy origin: Celtic
Cassidy gender: Male

Cassie
Cassie meaning: Unheeded prophetess. A diminutive of Casirnir, Cassandra, or Catherine. Cassandra was a Trojan prophetess, daughter of King Priam. In Homer's 'The Iliad' Cassandra's prediction of the fall of Troy was unheeded. Also used as an independent name.
Cassie origin: English
Cassie gender: Female

Cassiel
Cassiel meaning: Angel of Saturday; the earthly mother.
Cassiel origin: Latin
Cassiel gender: Female

Cassio
Cassio meaning: 'The Tragedy of Othello, Moor of Venice' Lieutenant to Othello.
Cassio origin: Shakespearean
Cassio gender: Male

Cassiopeia
Cassiopeia meaning: Mother of Andromeda.
Cassiopeia origin: Greek
Cassiopeia gender: Female

Cassius
Cassius meaning: Vain.
Cassius origin: Latin
Cassius gender: Male

Cassivellaunus
Cassivellaunus meaning: From Arthurian legend.
Cassivellaunus origin: Celtic
Cassivellaunus gender: Male