Vista - Accessing properties of a control in a style declaration

Data binding gurus out there,

I need your help. I have the following XAML Page:

<Page xmlns="http://schemas.microsoft.com/winfx/2006/xaml/
presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:FormData1;assembly=FormData1"
Title="EntControlTest" Height="176" Width="384">
<Page.Resources>
<local:ValueExtractorConverter x:Key="ValueExtractorConverter"/>
<Style TargetType="{x:Type Label}">
<Setter Property="VerticalAlignment" Value="Center"/>
<Setter Property="Content">
<Setter.Value>
<!-- this is what i want <Binding
XPath="descendant::Control[@Name='<controlName>']/Value" /> -->
<!-- e. g. <Binding
XPath="descendant::Control[@Name='LBL_2']/Value" /> -->
<!-- but there is not way to inject conditions into an
xpath string (at least not in xaml) -->
<!-- i found a solution where they propose to use a
binding value converter and pass in -->
<!-- the necessary info to the converter via its
parameters -->
<!-- but the question now is: how to i get the name of the
control being "styled" into the parameters? -->
<Binding Converter="{StaticResource
ValueExtractorConverter}" >
<Binding.ConverterParameter>
<local:XmlConverterParameter
XPathTemplate="descendant::Control[@Name='{0}']/
Value"
XPathCondition="LBL_2"
/>
<!-- how can i get e. g. LBL_2 into XPathCondition? --

<!--XPathCondition="{Binding
RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type
Label}}}" -->
<!--XPathCondition="{Binding
RelativeSource={RelativeSource Mode=TemplatedParent}}"-->
<!--XPathCondition="LBL_2" -->
</Binding.ConverterParameter>
</Binding>
</Setter.Value>
</Setter>
</Style>

</Page.Resources>

<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width=".3*"/>
<ColumnDefinition Width=".3*"/>
<ColumnDefinition Width=".3*"/>
</Grid.ColumnDefinitions>

<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>

<Label Grid.Column="0" x:Name="LBL_1" Content="{Binding
XPath=Control[@Name\=\'LBL_1\']/Value}"/>
<Label Grid.Column="1" x:Name="LBL_2"/>

</Grid>
</Page>

The page is displayed and its DataContext is set to some XML coming
from somewhere.

<Data>
<Control Name="LBL_1">
<Value>This is the 1st Label</Value>
</Control>
<Control Name="LBL_2">
<Value>This is the 2nd Label</Value>
</Control>
</Data>

What I would like to do, is to not set the display text of a label in
the XAML code of the page, but rather let each label in the page data
bind to some XML node.
Now I could write code like
<Label Grid.Column="0" x:Name="LBL_1" Content="{Binding
XPath=Control[@Name\=\'LBL_1\']/Value}"/>
for any of the labels in the page, but I was wondering whether there
is a more elegant solution this and the binding for any label is set
up by a style defined for Label controls. And here is the issue. Since
any of the labels needs to data bind to a different XML node I must
somehow parametrize the XPath in the style so that the XPath
references the correct XML node. Basically the mapping scheme hereby
is: XML node name == Name of the Label control.
Please look at the Page code for things that I already tried to do and
further explanations.

Any suggestions are highly welcome. Thank you very much in advance.

Regards,
Michael