namespace MyNamespace
{
    [System.ComponentModel.DefaultBindingProperty("Name")]
    public class Person
    {
        public int ID { get; set; }
        public string Name { get; set; }
        public int Gender { get; set; }
    }

    public class Family
    {
        public int ID { get; set; }
        public Person Father { get; set; }
    }
}

public class Person
{
    public int ID { get; set; }
    public string Name { get; set; }
    public int Gender { get; set; }
    public override string ToString()
    {
        return Name;
    }
}