I have two tables DTNAME (holds addresses), DTNAMELOG (holds a list of previous company names and the date and time they were changed).
The DTNAME (address) key is a partial key in the DTNAMELOG (address history) file.
DTNAME's key (MGROUP, MID) references the partial key (MLGROUP, MLID) in DTNAMELOG.
So I want the Dtname class to contain a set of Dtnamelog's (the history) AND
Dtnamelog to have reference to the current instance of Dtname.

How do I modify the mappings of Dtnamelog and Dtname to reflect this?

I started by adding this to Dtname:
<set name="history" fetch="join" inverse="true">
<key>
<column name="group"/>
<column name="id"/>
</key>
<one-to-many class="Dtnamelog"/>
</set>

and this to Dtnamelog:
<many-to-one name="currentName" class="Dtname">
<column name="group"/>
<column name="id"/>
</many-to-one>

But the examples I've seen have named attributes the same as the column names...

=======================Dtnamelog Mapping============================
<hibernate-mapping>
<class catalog="S1027A32" name="db2.co99blh.Dtnamelog" schema="CO99BLH" table="DTNAMELOG">
<comment>ADDRESSES Change Log</comment>
<composite-id class="db2.co99blh.DtnamelogId" name="id">
<key-property name="group" type="string">
<column length="4" name="MLGROUP"/>
</key-property>
<key-property name="id" type="string">
<column length="5" name="MLID"/>
</key-property>
<key-property name="logyr" type="short">
<column name="MLLOGYR" precision="4" scale="0"/>
</key-property>
<key-property name="logmn" type="byte">
<column name="MLLOGMN" precision="2" scale="0"/>
</key-property>
<key-property name="logdy" type="byte">
<column name="MLLOGDY" precision="2" scale="0"/>
</key-property>
<key-property name="loghr" type="byte">
<column name="MLLOGHR" precision="2" scale="0"/>
</key-property>
<key-property name="logmin" type="byte">
<column name="MLLOGMIN" precision="2" scale="0"/>
</key-property>
<key-property name="logsec" type="byte">
<column name="MLLOGSEC" precision="2" scale="0"/>
</key-property>
</composite-id>
<property name="co" type="string">
<column length="75" name="MLCO" not-null="true">
<comment>Company</comment>
</column>
</property>
<property name="logusr" type="string">
<column length="10" name="MLLOGUSR" not-null="true">
<comment>Change User</comment>
</column>
</property>
</class>
</hibernate-mapping>

=======================Dtname Mapping============================
<hibernate-mapping>
<class catalog="S1027A32" name="db2.co99blh.Dtname" schema="CO99BLH" table="DTNAME">
<comment>Basic Addresses</comment>
<composite-id class="db2.co99blh.DtnameId" name="id">
<key-property name="group" type="string">
<column length="4" name="MGROUP"/>
</key-property>
<key-property name="id" type="string">
<column length="5" name="MID"/>
</key-property>
</composite-id>
<property name="name" type="string">
<column length="40" name="MNAME" not-null="true">
<comment>Name</comment>
</column>
</property>
<property name="co" type="string">
<column length="40" name="MCO" not-null="true">
<comment>Company</comment>
</column>
</property>
<property name="addr" type="string">
<column length="30" name="MADDR" not-null="true">
<comment>Address</comment>
</column>
</property>
<property name="strt" type="string">
<column length="30" name="MSTRT" not-null="true">
<comment>Street</comment>
</column>
</property>
<property name="city" type="string">
<column length="15" name="MCITY" not-null="true">
<comment>City</comment>
</column>
</property>
<property name="prov" type="string">
<column length="15" name="MPROV" not-null="true">
<comment>Province</comment>
</column>
</property>
<property name="cntry" type="string">
<column length="15" name="MCNTRY" not-null="true">
<comment>Country</comment>
</column>
</property>
<property name="po1" type="string">
<column length="4" name="MPO1" not-null="true">
<comment>Post</comment>
</column>
</property>
<property name="po2" type="string">
<column length="5" name="MPO2" not-null="true">
<comment>Code</comment>
</column>
</property>
<property name="grtg" type="string">
<column length="40" name="MGRTG" not-null="true">
<comment>Greeting</comment>
</column>
</property>
<property name="comm" type="string">
<column length="30" name="MCOMM" not-null="true">
<comment>Comment</comment>
</column>
</property>
<property name="phar" type="string">
<column length="3" name="MPHAR" not-null="true">
<comment>Area Code</comment>
</column>
</property>
<property name="phex" type="string">
<column length="3" name="MPHEX" not-null="true">
<comment>Tel Ex</comment>
</column>
</property>
<property name="phnm" type="string">
<column length="4" name="MPHNM" not-null="true">
<comment>Tel Locl</comment>
</column>
</property>
<property name="phext" type="string">
<column length="4" name="MPHEXT" not-null="true">
<comment>Tel Ext</comment>
</column>
</property>
<property name="faxar" type="string">
<column length="3" name="MFAXAR" not-null="true">
<comment>Area Code</comment>
</column>
</property>
<property name="faxex" type="string">
<column length="3" name="MFAXEX" not-null="true">
<comment>FAX Ex</comment>
</column>
</property>
<property name="faxnm" type="string">
<column length="4" name="MFAXNM" not-null="true">
<comment>FAX Locl</comment>
</column>
</property>
<property name="seq1" type="string">
<column length="20" name="MSEQ1" not-null="true">
<comment>Sequence Option 1</comment>
</column>
</property>
<property name="seq2" type="string">
<column length="20" name="MSEQ2" not-null="true">
<comment>Sequence Option 2</comment>
</column>
</property>
<property name="seq3" type="string">
<column length="20" name="MSEQ3" not-null="true">
<comment>Sequence Option 3</comment>
</column>
</property>
<property name="stat" type="char">
<column length="1" name="MSTAT" not-null="true">
<comment>S T</comment>
</column>
</property>
<property name="styr" type="short">
<column name="MSTYR" not-null="true" precision="4" scale="0">
<comment>Stat Year</comment>
</column>
</property>
<property name="stmn" type="byte">
<column name="MSTMN" not-null="true" precision="2" scale="0">
<comment>ST MM</comment>
</column>
</property>
<property name="stdy" type="byte">
<column name="MSTDY" not-null="true" precision="2" scale="0">
<comment>ST DD</comment>
</column>
</property>
<property name="stusr" type="string">
<column length="10" name="MSTUSR" not-null="true">
<comment>Last User To Change Status</comment>
</column>
</property>
<property name="cryr" type="short">
<column name="MCRYR" not-null="true" precision="4" scale="0">
<comment>Creation Year</comment>
</column>
</property>
<property name="crmn" type="byte">
<column name="MCRMN" not-null="true" precision="2" scale="0">
<comment>Mon</comment>
</column>
</property>
<property name="crdy" type="byte">
<column name="MCRDY" not-null="true" precision="2" scale="0">
<comment>Day</comment>
</column>
</property>
<property name="ogrp" type="string">
<column length="4" name="MOGRP" not-null="true">
<comment>Owner Group</comment>
</column>
</property>
<property name="oid" type="string">
<column length="5" name="MOID" not-null="true">
<comment>Owner Id</comment>
</column>
</property>
</class>
</hibernate-mapping>