Let's suppose we have this classes

public class Person
    public string FirstName {get; set; }
    public string LastName {get; set;}
    public IList Emails {get; set;}

and the database model was like the following:

To map these two tables to the above class, we use the following mapping using Fluent NHibernate:

public class PersonMapping : SubclassMap
    public PersonMapping()
        Map(x => x.FirstName);
        Map(x => x.LastName);
        HasMany(x => x.Emails).Table("PersonEmail")

In order to map from a table to a list of string, we use the "Element"
Element: tells NHibernate to map from a column name to the mapped property, which is a list of strings.