Siegmund is not a popular first name. It is more often used as a unisex (male and female) name.
First names and their meaning - Page 7401
Size
Size is not a popular first name.
Slyman
Slyman is not a popular first name.
Soler
Soler is not a popular first name.
Sophio
Sophio is not a popular first name. It is more often used as a girl (female) name.
Specter
Specter is not a popular first name.
Stefanka
Stefanka is not a popular first name. It is more often used as a girl (female) name.
Stever
Stever is not a popular first name.
Strella
Strella is not a popular first name. It is more often used as a girl (female) name.
Stroker
Stroker is not a popular first name.