TextBox1.Text = rng(1, "Start_1").Text

Start_1 is a range of cells ( AU3 :AU36) defined on the active worksheet. I
want the text from TextBox1 to be placed into the Start_1 of the current
row.

I want to use Defined Names, so that over time if I have to add or subtract
columns I will not have to go back and re-point all my references. The code
I used before was TextBox1.Text = rng(1, 47).Text (this is just one of
dozens of lines code), but if I added or removed columns the references all
had to be readjusted.