Mansueto is not a popular first name. It is more often used as a boy (male) name.
First names and their meaning - Page 6480
Mansuri
Mansuri is not a popular first name.
Mardo
Mardo is not a popular first name.
Marletta
Marletta is not a popular first name. It is more often used as a girl (female) name.
Marzel
Origin: Latin. 
Meaning: Little Marcus. 
Marzel is not a popular first name. It is more often used as a boy (male) name. 
Mashawn
Origin: Native-American. 
Mashawn is not a popular first name. It is more often used as a boy (male) name. 
Matson
Meaning: Son of Matthew. 
Matson is not a popular first name. It is more often used as a boy (male) name. 
Maula
Origin: African. 
Meaning: Master lord. 
Maula is not a popular first name. It is more often used as a boy (male) name. 
Maxson
Maxson is not a popular first name. It is more often used as a boy (male) name.
Meldon
Meaning: Hill with a cross. 
Meldon is not a popular first name. It is more often used as a boy (male) name.