Advice before editing this pre-1700 Alvarez profile?

Question

I have information to contribute to the profile of Guilliaem Alvarez. This is what I can add:

• Parents, siblings and more (I have not read the complete book yet but I found Guiliaem Alvarez who I already know, so I know I can add all the people in the book, of whom a lot probably already exist on this website).

These are the sources I am using:

• The book: De Nederlandsche familie Alvarez en hare afstamming uit den hertog van Alva
• Online family trees to prove the book (if these family trees used other sources), to add other spellings of names and because sometimes they contain the same information as the book but are easier to understand.

Should I contact one of the pre-1700 projects or know about any style guidelines before proceeding? Thank you!

Answer 1

If the trees have Proper sources, then use the sources.