The oldest child of Dr. Landon Marion Timmonds and Jane Mandeville Tichenor, was born in Knoxville, Iowa, on May 12, 1853, less than a year after his parents moved there.
After a few years, he entered politics, running as a Democrat for the office of representative to the state legislature from Barton County, to which he was elected in 1887.
During his years as a judge, Henry Carroll Timmonds tried one case which involved much local and even some national interest, one of the so-called "boodle" trials.
Judge Timmonds moved to Kansas City, Missouri, in 1905, becoming a law partner of U. S. Senator William Warner.
He was injured in a carriage accident that killed his wife, Katherine "Kate" Faust, in 1909, but remarried the next year, to Anastasia Murray.