Gahn is not a popular first name.
First names and their meaning - Page 9563
Gainey
Gainey is not a popular first name.
Galambos
Galambos is not a popular first name.
Galel
Origin: Hebrew. 
Meaning: Wave of god. 
Galel is not a popular first name. It is more often used as a boy (male) name. 
Galine
Meaning: God has redeemed. 
Galine is not a popular first name. It is more often used as a girl (female) name. 
Gallan
Gallan is not a popular first name.
Gamma
Gamma is not a popular first name. It is more often used as a girl (female) name.
Gandee
Gandee is not a popular first name.
Ganel
Origin: Hebrew. 
Meaning: Garden of god. 
Ganel is not a popular first name. It is more often used as a boy (male) name. 
Ganer
Ganer is not a popular first name.