Bind a ToolTip to Control's Binding

This seems like a simple question, but it is baffling me. I have a TextBlock which gets it Text property from a binding.  The data context for  my controls is an ADO.Net DataSet which has exactly 1 record containing all of my control values.  Here's the XAML for the control:

<TextBlock Text="{Binding Mode=OneWay, Path=[0][con_data_feed_CaroAngle]}" Height="20" Width="30" FontFamily="Consolas" TextAlignment="Center" FontSize="12" FontWeight="Bold" Margin="35,43,0,0" Foreground="White" HorizontalAlignment="Left" VerticalAlignment="Top" ToolTip="{Binding RelativeSource={RelativeSource Self}, Path=Text}"/>

Using a tip I got HERE I added the ToolTip attribute at the end.  While this works perfectly for the purpose the article described (displaying the full text in a ToolTip when the text box or text block is too narrow), it doesn't accomplish what I want.

I would like to enable the user to hover over the control and have the ToolTip display the DataColumn name.  In this example it should display "con_data_feed_CaroAngle".

In other words, instead of displaying the value in the Text property, I want it to display the Text property's binding path.  Is this possible?

Thanks...

Ron Mittelman