Okay, so this is what I've found out with my 'obsession' with the Addams family of the like of Wednesday and Pugsley since their ages are very different in different versions:
..::The Addams Family 1964 - 1966::..
This is first series with two young children.
Wednesday - Lisa Loring 6 - 8 years old
Pugsley - Kenneth Weatherwax 9 - 10 years old
..::Halloween With The New Addams Family 1977::..
Somehow Gomez and Morticia apparently have produced two more children that look exactly like their last named Wednesday and Pugsley aswell! They also wear the same thing!
Wednesday - Lisa Loring 19 years old
Pugsley - Ken Weatherwax 22 years old
Wednesday JR - Jennifer Surprenant about 6 years old
Pugsley JR - Ken Marquis - about 8 years old
..::The Addams Family/Values 1991, 1993::..
Now Wednesday and Pugsley are the SAME age instead of their usual 2 year gap. Morticia and Gomez have another child called Pubert (played by FEMALE twins)
Wednesday - Cristina Ricci 10 - 13 years old
Pugsley - Jimmy Workman 10 - 13 years old
Pubert - (VOICE Cheryl Chase) Kaitlyn & Kristen Hooper both 1 year old
..::The Addams Family Reunion 1998::..
Now Wednesday and Pugsley are back to being the same age! But they are a year younger.
Wednesday - Nicole Fugere 12 years old
Pugsley - Jerry Messing 12 years old
..::The New Addams Family 1998 - 1999::..
Wednesday is now around 3 years older than Pugsley!
Wednesday - Nicole Fugere 13 years old
Pugsley - Brody Smith 9 years old
Brody Smith and Nicole Fugere