Known as the Cattle King of Atchison County. Hargrove, a staunch democrat, served as sheriff of Atchison County.
Hargrove was the son of John Daniel and Nancy Young Hargrove. His family came from Trigg county Kentucky in 1832 to Lafayette county Missouri with five Hargrove families, a mass of oxen pulled wagons and thirty slaves in tow. His father came to Sugar Creek on the Missouri bottoms east of Atchison in the Spring of 1838 claiming 80 acres of land. The patent to this land was signed by President James K. Polk in 1840.
In the fall of 1855 L. B. Hargrove's older brother, Harrison B. Hargrove took up a claim of 160 acres at Monrovia. This land came into the hands of Lynn B. Hargrove and is part of the farm that has been passed down thru Hargrove family to this day, making it one of the oldest continual family farms in Atchison county.

The New Leaf - Effingham, Kansas - 02 Oct 1896, Fri - Page 5
We have the sad intelligence to-day of Mr. Len Hargrove's death. He was buried at the Monrovia cemetery Thursday. The funeral services were held at the Monrovia M. E. church at 2 o'clock p. m.
Page 1 — Lin Hargrove of Leoti, Kans., died of paralysis and his remains arrived at Effingham at Wednesday night and were buried at Monrovia Thursday. Services were held at the M. E. church at Monrovia. The Masonic fraternity had charge and buried the honored brother with their honors. Mr. Hargrove was a former resident of this place and owns a number of farms here. He was respected by all. The family have the sympathy of all.

L. B. HARGROVE, stock dealer and farmer, P. O. Monrovia. One of the most extensive stockmen in the West, and one of the first settlers of Kansas is L. B. Hargrove, Esq. He is a native of Missouri and was born in LaFayette County, May 28, 1835. At an early age removed to Buchanan County, Mo., with his parents, his father, John Hargrove, being a pioneer in that portion of the State. The subject of this sketch was reared and educated on Sugar Creek, there residing until 1854, when he became a resident of Atchison County. For a time he was engaged in herding cattle, and pre-empted a claim in close proximity to his present home, his brother having pre-empted the farm he now owns. Being one of the first farm openers he early identified himself with the agricultural interests of the State. He has always made a specialty of the stock trade and in this line has been eminently successful, being recognized in Chicago and St. Louis as one of the largest shippers in the Northwest. He is a self-made man, commencing in meager circumstances he has obtained a competency by industry and good management. He has been twice married. In 1839 to Miss Sarah Duncan, of Kentucky, now deceased. Had nine children - Elizabeth M., George, Willis, Robert, Reuben C., and Boniford; three deceased - Ada, Sarah and Missie. His present wife was formerly Mary Miller. By this marriage they have two daughters - Gracie Pearl and Allie. Mr. Hargrove during the Rebellion was a soldier in the State Militia, and while in the engagement at Westport, Mo., was severely wounded. He is a member of the Masonic fraternity, McKey Lodge, of Effingham.
From William G. Cutler's History of the State of Kansas