Career
As a captain in command of the Warsaw Cadets in the Illinois militia, Grover was accused of having ordered his men to storm the jail and attack the Smiths. At trial, a jury acquitted Grover and four other defendants of the murders. In 1852, after an unsuccessful bid for election to the Illinois General Assembly, Grover moved from Hancock County, Illinois to Saint Louis, Missouri.
In 1863 he was appointed a United States Attorney for the eastern district of Missouri.
By 1871 he had moved back to Warsaw, Illinois, where he lived until his death.