Two hours... can’t find solution.

sorry if I am missing the obvious...
Here is a sample of my menu:
Parent 1
Doc 1
Doc 2
Doc 3
Doc 3.1
Doc 3.2
Doc 4
Parent 2
Doc 1
Doc 2
Doc 3
In my template for Parent 1
Wayfinder is simply set as: [[Wayfinder?startId=`1` ]]
But I want my output to include the parent (which is also id="1")
I get:
Doc 1
Doc 2
Doc 3
Doc 3.1
Doc 3.2
But want:
Parent 1
Doc 1
Doc 2
Doc 3
Doc 3.1
Doc 3.2
I’ve hit the wall after trying what seems to be every combination of $parentClass calls I can think of... I’m missing something!! Can somebody shed light on my pool of frustration? I’m struggling to get out the gate with this tool.