Does anyone know roughly when the character Ailyn Vell makes her appearance, time line wise, and how old she might be? (In relationship to ANH)
-Unfortunately, I don't know enough about Ailyn Vell, if I were to guess though, she should be in her late teens/early 20s by the end of "Return of the Jedi"
And, if you had to take a wild guess, when would you place the Fett vs. the Clones battle that took place in one of the video games?
-Considering that Boba is about 10 when Episode 2 takes place, and Episode 3 takes place three years later (Boba=13) and the Empire rises soon after that, my best guess is, Boba is probably in his late teens/early adulthood, more that likely +5 years after the events that took place on ROTS. Incidentally, the clone rebellion on Kamino in BattleFront 2 would also place Boba about the time he meets Sintas Vell and fathers Ailyn.
Also, any guess as to how hold Fett is based on cannon, at the start of ANH?
if at the end of ROTS, Boba=13 and ANH occurs 18-20 years later, then Boba would be in his early 30s.
If calculated correctly, and assuming Boba fathered Ailyn at the age of 17, Ailyn would be 13-15 years old at the time of ANH and anywhere between 18-20 years old by the end of ROTJ.
From what I gather, Ailyn mistook SPAR (clone with Jango's memories who decides to revive the mandalorian clans) for Boba and kills him. If Ailyn kills Spar, she must've been in her mid teens or early 20s which places that period at ANH where boba would be in his 30s. Follow me now; if Spar was cloned near the end of the clone wars, he would be around 20 years old during ANH, but technically 40 physically which could explain the confusion since Spar is close to the physical age of Boba.
After the death of Spar, Fenn Shysa, another mandalorian takes over the clans while Boba escapes the Sarlaac and kills Jodo for impersonating him. Ailyn also impersonates Boba using Spar's armor, but I don't know if Boba actually finds out about this.
I'll dig more and see what else I can find out.