Nancy, the title that prints on the legend comes from the "Pattern Properties" (Tools->Pattern Properties).
Note that once you enter the title on the pattern properties, that title will also appear as the "title" area of the pattern's edit window. This confused me a bit at first, since I had multiple files with the same title in the pattern properties (different versions) and it was hard to keep them straight. I now enter the title in the pattern properties only when I'm really close to finishing!