Summarise an a XML data - siblings

Question

I have an input in the format below which pulls all movie lists with actor names (key is movie) and I need to summarize the data on actor perspective.
<Response>
<dpDeviceName>TEST</dpDeviceName>
<dpTxnId>10412325</dpTxnId>
<dpTimespamp>2014-06-19 08:51:41 UTC</dpTimespamp>
<StoredProcedureResult>
<resultSet>
<metadata>
<columnInfo index="1" nullable="false" name="FNAME" precision="3" scale="0" type="SQL_CHAR"/>
<columnInfo index="2" nullable="false" name="LNAME" precision="30" scale="0" type="SQL_CHAR"/>
<columnInfo index="3" nullable="false" name="ID" precision="3" scale="0" type="SQL_CHAR"/>
<columnInfo index="4" nullable="false" name="MOVIE" precision="3" scale="0" type="SQL_CHAR"/>
</metadata>
<row>
<column>
<name>FNAME</name>
<value>TOM</value>
</column>
<column>
<name>LNAME</name>
<value>CRUISE</value>
</column>
<column>
<name>MOVIE</name>
<value>Jack Reacher</value>
</column>
<column>
<name>ID</name>
<value>123</value>
</column>
</row>
<row>
<column>
<name>FNAME</name>
<value>TOM</value>
</column>
<column>
<name>LNAME</name>
<value>CRUISE</value>
</column>
<column>
<name>MOVIE</name>
<value>TOPGUN</value>
</column>
<column>
<name>ID</name>
<value>123</value>
</column>
</row>
<row>
<column>
<name>FNAME</name>
<value>MORGAN</value>
</column>
<column>
<name>LNAME</name>
<value>FREEMAN</value>
</column>
<column>
<name>MOVIE</name>
<value>SEVEN</value>
</column>
<column>
<name>ID</name>
<value>128</value>
</column>
</row>
</resultSet>
</StoredProcedureResult>
</Response>
I need this to be formatted in the below manner :
<library>
<Actor>
<firstname>TOM</firstname>
<lastname>CRUISE</lastname>
<movielist>
<movie>Jack Reacher</movie>
<movie>TOPGUN</movie>
</movielist>
<id>123</id>
</Actor>
<Actor>
<firstname>MORGAN</firstname>
<lastname>FREEMAN</lastname>
<movielist>
<movie>Seven</movie>
</movielist>
<id>128</id>
</Actor>
</library>
I am stuck at the place where i have to make a reference to next row from current for each loop to decide if movie list has to continue or block has to be closed. Any guidance here is greatly appreciated.