> More to the point, I want to collect all of the sibling nodes from an
> entry 
you mean child nodes of the entry here not sibling, something like:


<xsl:for-each-group seelct="entry" group-by="Subject">
 <entry>
   <xsl:copy-of select="Subject"/>
   <xsl:copy-of select="current-group()/*[not(self::Subject)]"/>
 </entry>
</xsl:for-each>

David

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