Where are widget screen positions (coordinates) stored?

I keep a widget open on my desktop on my secondary monitor. Went away on vacation. No external monitor. The widget was "trapped" offscreen and active. I tried looking in the preferences file for that widget but only the preferences for the widget were stored, not any meta-preferences ABOUT the widget, in this case its X and Y coordinates on the screen. I was hoping the pref file would have that information and I could just reset to 0,0. It seems like it must be stored somewhere as it keeps its position every time I boot. I just don't know where it is or where to look. Does anyone know where this information may be stored?