Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Alonzo Ridley, (June 3, 1826 -- March 25, 1909) was a 49er, trader, Indian agent, engineer, Undersheriff of Los Angeles County, Confederate Army officer from California, who led the Los Angeles Mounted Rifles on their epic march across the Southwestern deserts from California to Texas in 1861.
Answer : 1909
When did Alonzo Ridley die?