Sadly, yes. We would want to see

<name><sname>Houlihan</sname>,<fname>Patrick F.</fname></name>
<name><sname>Franklin</snane>,<fname>Saul</sname>  Jnr</name>

cheers

bash-3.2$ saxon9 names.xml names.xsl
<?xml version="1.0" encoding="UTF-8"?>
<name><sname>Houlihan</sname>, <fname>Patrick F.</fname></name>
<name><sname>Franklin</sname>, <fname>Saul</fname> Jnr</name>

names.xsl:
<xsl:stylesheet version="2.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 >

<xsl:template match="nameGrp">
<xsl:variable name="nameattrs" select="@foreNames,@mainName"/>
<name>
 <xsl:analyze-string select="."
  regex="({string-join($nameattrs,')|(')})">
<xsl:matching-substring>
 <xsl:element name="{
if(regex-group(1)=.) then 'fname'
else 'sname'
}"><xsl:value-of select="."/></xsl:element>
</xsl:matching-substring>
<xsl:non-matching-substring>
<xsl:value-of select="."/>
</xsl:non-matching-substring>
 </xsl:analyze-string>
</name>
</xsl:template>

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