Mulle is not a popular first name.
First names and their meaning - Page 8602
Munno
Munno is not a popular first name.
Murron
Meaning: Bitter. 
Murron is not a popular first name. It is more often used as a unisex (male and female) name. 
Mutlaq
Origin: African. 
Meaning: Absolute unlimited. 
Mutlaq is not a popular first name. It is more often used as a boy (male) name. 
Nadiv
Origin: Hebrew. 
Meaning: Noble. 
Nadiv is not a popular first name. It is more often used as a boy (male) name. 
Nadka
Nadka is not a popular first name. It is more often used as a girl (female) name.
Nadyia
Nadyia is not a popular first name. It is more often used as a girl (female) name.
Nantz
Nantz is not a popular first name.
Narang
Narang is not a popular first name.
Narvaez
Narvaez is not a popular first name.