Prizmz, it seems the answer is at least since the 12th century. Per Miriam-Webster online dictionary:
"good·ly
Pronunciation: \ˈgu̇d-lē\
Function: adjective
Inflected Form(s): good·li·er; good·li·est
Date: before 12th century
1 : pleasantly attractive
2 : significantly large : considerable <a goodly number"
And thank you, Gracie, I think. I'm not sure that writing for and with attorneys is a good thing or not but it does mean that you can at least be articulate, albeit wordy.