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Citizen Kane - timeline
Charles Foster Kane born.
Charles Foster Kane begins his newspaper career.
In your current timeline for "Citizen Kane" you have Kane running for Governor in 1920, however, in the newsreel seen at the beginning of the film, the narrator specifically states he ran in 1916, plus his wife and son were killed in an auto accident in 1918, (also according to the newsreel).
Charles Foster Kane runs for governor but loses after being caught in sex-scandal with a young starlet.
Charles Foster Kane dies.
If Kane was born in 1856, he would have been 15 in 1871, the date of Thacher's diary entry about the day he took charge of Kane.