The following is a very basic timeline of key things that have happened centering around Tony Ketchum starting eight years before chapter one begins. The timeline will contain spoilers for the story and the list will expand whenever more important events occur. The author is aware that some things may have occured a tad differently within the anime, but this is fanfiction; like it or lump it.
The navigation links all events that happened by Tony's Age.
Age 10
Moved from Viridian City in the Kanto Region to Violet City in the Johto Region
Received Charmander from Professor Oak via Mother
Mother died
Decided to not go on journey for the time being
Started training under Falkner
Age 18
Got disowned by father
Heads off to finally start his delayed journey
Meets Cordelia 'Delia' Godda in New Bark Town
Aquires Chikorita
With Cordelia in tow, heads to the Kanto Region
Meets Professor Oak & his family
Receives Seaking from Professor Oak
Gets Boulder Badge from Flint in Pewter City
Gets Cascade Badge from Sakura in Cerulean City
Chikorita evolves to Bayleef
Age 19
Gets Thunder Badge from Lt. Surge in Vermilion City
Gets Marsh Badge from Koga in Saffron City
Gets Rainbow Badge from Sara in Celadon City
Gets Soul Badge from Gloria in Fuchsia City
Gets Volcano Badge from Blane in Cinnabar Island
Gets Agyros Badge from Selene in Krustallos City
Finds out that Delia & Giovanni had a past
Gets Earth Badge from Giovanni in Viridian City
Delia sprains her ankle on Victory Road
Bayleef evolves into Meganium
Becomes the next Pokemon League Champion
Proposes marriage to Delia
Gets in contact with father who apologizes for disowning him
Age 20
Buys home in Pallet Town
Gets married to Delia
Giovanni crashes the wedding but is swiftly given the boot
Goes on honeymoon
Age 21
Father dies
Ash is born
Age 25
Ash winds up missing
Ash is found with a sprained ankle
By Ash's description, Tony believes that his deceased father is Ash's Guardian Angel
Age 29
Becomes Co-Gym Leader of Krustallos City after Selene semi-retires
Aquires three other Pokemon just for use in Krustallos Gym
Age 31
Ash starts his own Pokemon Journey
Age 32
Attempts to defend a Mister Mime from a pack of Mightyena
Mister Mime gives Tony a bundled item
Mister Mime dies
Tony finds out that the bundled item is a Pokemon Egg
Pokemon Egg hatches and turns out to be Mime Junior
Raises Mime Junior until it evolves into a Mister Mime
Sends Mister Mime off towards Pallet Town
Mister Mime becomes 'owned' by Delia
Mister Mime gets the nickname of Mimey
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