C#

// Use struct or class. class are a bit more efficient than struct.
public struct My4Datas: IComparable
{
  public DateTime DateOfBirth;
  public string   FamilyName;
  public string   FirstName;
  public bool     Married;

  public My4Dates(DateTime dateOfBirth, string familyName, string firstName, bool married)
  {
    this.DateOfBirth = dateOfBirth;
    this.FamilyName = familyName;
    this.FirstName = firstName;
    this.Married = married;
  }

  public int CompareTo(object other)
  {
    return this.DateOfBirth.CompareTo(((My4Datas)other).DateOfBirth);
  }
};

ArrayList myList = new ArrayList();
myList.Add(new My4Datas(...));
myList.Add(new My4Datas(...));
myList.Sort();

foreach (My4Datas data in myList)
{
  string name = data.FirstName + " " + data.FamilyName;
}