Which DataGridView Cell was clicked if I share a ContextMenuStrip with more than one DataGridView?

I want to share a ContextMenuStrip between two DataGridViews - i.e. DataGridView.ContextMenuStrip = whatever

In the ToolStripMenuItem.Click handler I can determine the associated DataGridView by using this code (which I derived from a three year old post found here!) ...

Dim c As ContextMenuStrip = DirectCast(DeleteToolStripMenuItem.GetCurrentParent, ContextMenuStrip)
If TypeOf c.SourceControl Is DataGridView Then
   Dim Grid As DataGridView = DirectCast(c.SourceControl, DataGridView)
   MsgBox(Grid.Name & "  /  " & Grid.CurrentCell.Value.ToString)

But so far I am not able to determine the cell.  The CurrentCell.Value is for 0,0.  I have been looking through all of the properties in the debugger and several look promising  but so far I have found nothing indicating which cell the right click occurred in. 

So if anyone knows and would share I would be grateful.  You would be saving me a lot of work.

Thanks,  Bob