[SalesForce] VF Page to Show Related Lists from Lookup Object on the Main Object

I am trying to develop a small VF page that will eventually be added to the standard SF page for a custom object called Test_Site__c.

Test_Site__c contains a lookup relationship to an object called ELTON__Other__c.

I wrote the following VF page and it works fine.

<apex:page standardcontroller="Test_Site__c">
  <p>Site {! Test_Site__c.Description__c }.</p> 
  <p>Other {! Test_Site__c.ELTON_Other__r.Name }.</p> 
</apex:page>

That displays a certain Test Site with it's associated ELTON Other name. That makes me think that I have the 2 objects correctly related.

And if I take Test_Site__c out of the equation I can write the page that I want for the lookup ELTON__Other__c object…

<apex:page standardcontroller="ELTON__Other__c"> 
  <p>Other {! ELTON__Other__c.Name }.</p> 
  <apex:relatedList list="ELTON__Equipment__r"/>
  <apex:relatedList list="ELTON__Equipment_Assignments__r"/>
  <apex:relatedList list="ELTON__Equipment1__r"/> 
  <apex:relatedList list="ELTON__Equipment_Loans__r"/>  
</apex:page>

That too works wonderfully in that it displays 4 related lists for an ELTON__Other__c object

Since a Test_Site__c record only ever has either 0 or 1 ELTON__Other__c records related to it I would like to display the 4 related lists from ELTON_Other__c and display them on the related Test_Site__c page (so meaning add the lists to the tiny first page example above).

Is this even possible?

Thanks in advance for any insight you could provide 🙂