Here’s how you can do it:
Create a model for your parent
In the field picker, select “Child Relationships”. Find your child object and select it.
Your child object will now show up in your field list (on the model). Click it - then you can set some properties.
Select “CreatedDate” on your child object. We’ll use this to get the most recently created child. Select any other fields you want to show (looks like you want to show ChildStatus, so select that.)
While clicked on the Child fields, select Properties. Set the record limit to 1 (so you only get one record) and the Ordered By field to CreatedDate DESC so you get the one most recently created.
Now create your table based on your Parent model. From the model tree up top, drag that child relationship field to your table. then you display fields using the Template merge syntax.
I build an example page using Accounts as the parent, and Contacts as the child. So this table shows the most recently created Contact.
Here’s the xml so you can see how I did it: