If I have an object with some children each with a trigger collider, how can I get to the parent object ?
Is there a parent.gameObject command?
Ultimately I have a game object in which I’d like have multiple colliders attached…
Any ideas?
Try transform.parent.gameObject;
Can I Destroy the parent? Or just affect the transform?
For something so specific, you could find the answer to your question with less effort than it takes to write follow up the question here (less text too!). 
One of the great things about Unity is that it encourages you to try things; rapid feedback!