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+# Mapping Duplicate Names
+
+Sometimes you have duplicate header names. This is handled through a header name index. The name index is the index of how many occurrences of that header name there are, not the position of the header.
+
+###### Data
+
+```
+Id,Name,Name
+1,first,last
+```
+
+###### Example
+
+```cs
+void Main()
+{
+    using (var reader = new StreamReader("path\\to\\file.csv"))
+    using (var csv = new CsvReader(reader, CultureInfo.InvariantCulture))
+    {
+        csv.Context.RegisterClassMap<FooMap>();
+        var records = csv.GetRecords<Foo>();
+    }
+}
+
+public class Foo
+{
+    public int Id { get; set; }
+    public string FirstName { get set; }
+	public string LastName { get; set; }
+}
+
+public sealed class FooMap : ClassMap<Foo>
+{
+    public FooMap()
+    {
+        Map(m => m.Id);
+        Map(m => m.FirstName).Name("Name").NameIndex(0);
+		Map(m => m.LastName).Name("Name").NameIndex(1);
+    }
+}
+```