User blog comment:IamJakuhoRaikoben/Chapter 445: The Ugly Fairy, Review./@comment-84.151.144.16-20150719010608/@comment-84.151.174.164-20150720201350

And if you want to know (I am not really good at guessing) my theory or given ages:

Team Lyon:

Lyon - 19, Zalty - (see Ultear of 7KoP), Yuuka - 18, Toby - 18, Sherry - 16 (keep in mind, it happened before her birthday and Lamia Scale start)

Phantom Lord:

I wrote it (Totomaru and Juvia are below it, Gajeel's age is Unknown and he can be over 80, although he looks like in his early-20s)

Jellal and some of Tower of Heaven:

Jellal - 19 (bTS), 26 (aTS)

Vidaldus - 20s

Ikaruga - 20s

Fukuro - Unknown

Wally - late teens or 20s

Shô - teens

Millianna - 16 (bTS), 23 (aTS)

Simon - late teens or 20s

Oración Seis (bTs; all aTS seven years older)

Brain - 30s or 40

Hoteye - 20s or 30s

Angel - teens or 20s

Cobra - late teens or 20s

Midnight - late teens or 20s

Racer - 20s

7 Kin of Purgatory (bTS):

Ultear - late teens or early 20s

Azuma - 20s

Caprico - Zoldeo (40s or 50s)/ Capricorn (ageless) <- except this two too

Zancrow - teens or 20s

Rustyrose - teens or 20s

Meredy/Meldy - early 10s

Kain - 20s or 30s

THIS WAS ALL!