Willis Benson Machen was born the son of Henry Ballenger Machen and Nancy Machen (née Tarrant) on April 10, 1810, in
Caldwell County, Kentucky (now
Lyon County, Kentucky). He attended the common schools in the area and became a farmer. Soon, he and a partner opened their own business, but it failed and nearly led Machen to financial ruin. Eventually, he was able to repay his debts, and he began building
turnpikes. His wife died in 1852 and in the same year he married his second wife Eliza N. Dobbins. They had three children: one son, John S. Machen and two daughters, Mary E. Machen and Elizabeth Machen. He was again widowed in 1859. He married thirdly Victoria Theresa Mims, daughter of John Harrison Mims and Caroline Hanson (Cresap) Mims, on September 10, 1859. They had eight children (at least three died in childhood): sons, Frank P. Machen, Willis B. Machen (IV) (1872–1903), Charles Victor Machen and Albert Sidney Machen (1875–1876) and daughters, Minerva Buckner "Minnie" (Machen) Sayre (1860–1958) (the wife of
Anthony D. Sayre and mother of
Zelda Sayre Fitzgerald), Maggie Davis Machen (1862–1864), Caroline Mims Machen (1874–1874) and Marjorie Lee (Machen) Rieke (1881–1913). ==Political career==