Born: 1801-12-25 Otsego County, New York
Died: 1891-12-29 Carthage, Illinois
Older brother of Francis Regnier, Felix moved with his parents at the age of two from New York to Marietta, Ohio, where he received a liberal education and undertook medical studies. In 1824, he received his medical diploma from the Medical Society of Ohio and began practicing medicine in Gallipois, Ohio. In 1826, he married Eliza DeVacht, a native of Gallipolis, with whom he had one child. In 1831, he moved to Jacksonville, Illinois, remaining two years before moving back to Marietta because of his wife's health. Eliza Regnier died on the return journey to Ohio, and September 1835, Felix wed Elizabeth Barber, a union that produced three children. He opened a medical office in the Marietta neighborhood of Harmar, practicing there until 1866. Elizabeth Regnier died in 1859, and in 1861, Felix married for a third time, to Julia C. Gardiner, with whom he had one child. He gave up his practice in 1866 because of his wife's health, and from 1866 to 1877, he traveled in hoping of improving her health. After Julia Regnier's death in 1877, he moved to Carthage, Illinois.
Gravestone, Mound Cemetery, Marietta, Ohio; History of Washington County, Ohio (Cleveland: H. Z. Williams, 1881), 411; Thomas Gregg, History of Hancock County, Illinois (Chicago: Chas. C. Chapman, 1880), 741.