Frank Whitmore was born near Ellsworth, Maine, on May 21, 1876, the son of Charles Whitmore, a farmer. He went to Virginia as a young man, and worked for years on the Old Dominion Line boats. With money he had saved, he bought a farm on the James River, near Richmond, and was a successful poultry farmer until the war called him to France and death
From American fighters in the Foreign legion, 1914-1918 by Paul Ayres Rockwell:
Page -143-
On September 30 arrived Frank Whitmore, of Richmond, Virginia, a thirty-eight-year-old chicken farmer who had come to France as soon as he could sell out his business and get pasf sage across the Atlantic, after the outbreak of war.
'Although a resident of Virginia, Whitmore was not a Southerner. In that case, the warmth of the blood might have explained many things. No, he was a true Yankee, born north of Boston. He was visibly the son of farmers — a product of that soil at the same time harsh and fertile which has given the sober, ingenuous, and severe race of American peasants. He had, of the Yankee farmer, the reticence, the phlegm, the great capacity for being bored, a certain artlessness and the long silences. Having formerly commenced French in a village school, he continued to study it with a stubborn patience. He read it well and spoke it badly. But he was not discouraged.
Page -304- 'Whitmore was one of the gamest fighters that ever crossed over from the States. He was one of my oldest friends at the front. We came from America on the same boat, enlisted together in Paris, were sent to the same barracks, went through training together and together we shared all hardships. I can truthfully say that Whitmore never knew what fear was. That is why he sleeps peacefully to-day in a little grave with the colonel of the Legion. If he had not been the man he was, he would have been in a hospital instead of in the grave.

From the Mémoire des homes (French Ministry of Defense) Website:
Franck WHITMORE
Mort pour la France le 18-04-1917 (Bouy - Ambulance 9/9, 51 - Marne, France)
Né(e) le/en 21-05-1876 (Etats-Unis) 40 ans, 10 mois et 28 jours
Rank: soldat de 2e classe
Unit: Régiment de marche de la Légion étrangère (RMLE)
Class: 1914 (EV)
Recruitment office:Seine bureau central (75)
Recruitment roll number:10848
Reference:Mort pour la France
Place of transcription of death:Paris 5e arrondissement (75 - Paris (ex Seine), France)
Inhumation:
Département : 51 - Marne
Commune : Souain-Perthes-lès-Hurlus
Lieu : Nécropole nationale La Crouée
Carré, rang, tombe : Tombe 363