Marlo
Marlo meaning: Form of Marilyn. Bitter.
Marlo origin: English
Marlo gender: Female

Marlon
Marlon meaning: Little hawk.
Marlon origin: French
Marlon gender: Male

Marlow
Marlow meaning: Hill by the lake.
Marlow origin: English
Marlow gender: Male

Marlowe
Marlowe meaning: Variant of Marlene, derived from Madeline: Woman from Magdala.
Marlowe origin: English
Marlowe gender: Female