How can you find a control in a controls collection by name?

I'm working on a mechanism to allow plug-ins to provide a web interface for plug-in specific configuration.  The plug-in provides it's interface by defining a user control.  The web app instantiates the user control via ParseControl.
I want to pass the instantiated control back to the plug-in for initialization.  So rather than iterating through all the controls in the UserControl's Controls collection, I was wondering if there is a way to specify a control by name?  The web controls collection is lacking the "Find" method that WinForms controls have.
There is a method on the controls collection called AsQueryable().  I've not got a lot of Linq experience yet, so I'm wondering if this guy exposes a means to "query" the controls collection for a specific control by name.
Any guidance here is much appreciated.
Thanks.
J
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