How to reference the selected item in listView cell containing MenuItems?

I have a listView created in xaml like so:

    <ListView x:Name="AccountsList" ItemSelected="AccountSelected">
        <ListView.ItemTemplate>
          <DataTemplate>
            <ViewCell>
            <ViewCell.ContextActions>
                <MenuItem Clicked="OnEdit"     
                   Text="Edit" />
                <MenuItem Clicked="OnDelete"     
                   Text="Delete" IsDestructive="True" />
             </ViewCell.ContextActions> 
              <ViewCell.View>
                  <StackLayout Orientation="Vertical"
                               HorizontalOptions="StartAndExpand">

                    <Label Text="{Binding DeviceName}"
                           HorizontalOptions="CenterAndExpand"/>
                  </StackLayout>
              </ViewCell.View>
            </ViewCell>
          </DataTemplate>
        </ListView.ItemTemplate>
      </ListView>

I'm assigning the ItemSource programmatically like so:
AccountsList.ItemsSource = App.Database.GetAccounts ();

And here's my 'onDelete' method:
public void OnDelete (object sender, EventArgs e) {
var mi = ((MenuItem)sender);
DisplayAlert("Delete Context Action", mi.Command + " delete context action", "OK");
}

I want to be able to reference the 'DeviceName' of the object from the 'onDelete' method. I know I can do this with the 'AccountSelected' method like this:

    void AccountSelected(object sender, SelectedItemChangedEventArgs e)
    {
        var _account = (Account)e.SelectedItem;
        // And access the account here.
    }

But the 'Clicked' method doesn't allow a 'void OnDelete (object sender, SelectedItemChangedEventArgs e)' signature (and I doubt it work work anyways).

How can I accomplish this?