Hi,
This one has been bugging me for days!

If I am seeing it correctly, the mystery word crops up 3 times, once with a different ending:
- in the margin, top left (looks like a "y" on the end)
- in line 5, fourth word from the left (looks like an "s" on the end)
- in line 8, fifth word from the left (looks like a "y" on the end)
I don't speak Portuguese.

But BrazilianBombshell's translation shows
legitimate daughter of ?? parents andfor line 5. I found out that "pais" is the masculine form for "parent" in Portuguese, but I am wondering whether this is perhaps not
pais but
Paes, i.e. the surname that also crops up in the text?
Also, I can't help but think that the first letter of the mystery word - at least in the 2 examples in the text body - is a bit too far away from the rest of the word.I wondered whether it was an "&" followed by a word beginning with "o".
Just my musings...
