Trying to work out the timeline that allows King Veruna of Naboo to exist in canon. He's been mentioned already in a few canon sources (mostly reference books, but indirectly in the novel Tarkin, where Grand Moff Tarkin mentions a conversation with Emperor Palpatine from "20 yrs ago" about a Naboo king).
If we take it literally, with Tarkin taking place in 14 BBY, that would put the time he had the conversation at 34 BBY, 2 years before Episode I. Queen's Peril by EK Johnston establishes Queen Sanandrassa as ruling for one two-year term in 34 BBY, preceding Amidala.
But Veruna can't be the King of Naboo before Sanandrassa either, because Queen's Shadow by EK Johnston establishes that Queen Réillata reigned before Sanandrassa for one two-year term. So Veruna can't be King before 36 BBY.
But Veruna can't be king before Réillata either, because Master & Apprentice by Claudia Grey establishes that the Queen of Naboo is named Ameé. Master & Apprentice occurs in 40 BBY, so if Ameé served two full year terms that would come to 36 BBY when Réillata is elected.
But Veruna can't be king before Ameé either, because Dooku: Jedi Lost by Cavan Scott, names a Queen Ekay of Naboo. Star Wars Timelines shows her reign as being from 44-40 BBY.
Another note in Star Wars Timelines says "Amid concerns about the corrosive effects of dynasties, the Naboo Reformations limit monarchs to a maximum of two two-year terms".
This could fit in with Veruna's Legends description of having a 13-year reign. He would have possibly been in the 7th two-year term at this point, meaning he first came to power in 57 BBY.
This timeframe would also fit with characters who were elected to their positions during Veruna's reign in Legends, still fitting in canon. Palpatine to the Senate in 52 BBY (during Veruna's 5th year), and Sio Bibble as Governor (no date given in either Legends or Canon).
Captain Panaka was also said to have been elevated to Captain following Veruna's abdication, which would still fit his age range too, being in his 40s during Episode I, would put him at age 28 at youngest.
So the timeline of rulers might be:
Veruna (57-44 BBY)
- abdicates in first year of 7th term (13 years)
- Naboo Reformations limits monarchical terms to 2 maximum
Ekay (44-40)
- 2 terms (4 years)
Ameé (40-36)
- 2 terms (4 years)
Réillata (36-34)
- 1 term (2 years)
Sanandrassa (34-32)
- 1 term (2 years)
Amidala (32-28)
- 2 terms (4 years)
Réillata (28-26)
- 1 term (2 years)
Jamillia (26-22)
- 2 term (4 years)
Neyutnee (22-20)
- 1 term (2 years)
Apailana (20-18)
- 1 term (2 years)
Does this math work out to others?