Nicely done. I would further add that, at least in Excel, if you've Frozen the top row, it will show up in the "Sort By" as "Spanish Name/Native Name/Usage/So On" rather than "Column A/B/C/D."

Add, I would add, a Google Spreadsheet automatically freezes the top row, assuming that most everyone is going to want to set up their spreadsheet in this way. Google Spreadsheet also has a dropdown thing in the frozen column that allows you to do a quick sort, either by alphabetical A-Z or alphabetical Z-A.