Question: Were Robert Graves and Oliver La Farge of the same nationality?

Context articles: Peter La Farge
Laughing Boy (novel)
Laughing Boy (film)
Oliver La Farge
Rockton, Wisconsin
Jacob Adolphus Holzer
La Farge Land Office
Robert Graves
La Farge Retainer Houses
La Fargeville, New York

Peter La Farge (born Oliver Albee La Farge, April 30, 1931 - October 27, 1965) was a New York-based folksinger and songwriter of the 1950s and 1960s.
 He is known best for his affiliations with Bob Dylan and Johnny Cash.
Laughing Boy is a 1929 novel by Oliver La Farge about the struggles of the Navajo in Southwestern United States to reconcile their culture with that of the United States.
 It won the Pulitzer Prize in 1930.
Laughing Boy is a 1934 film directed by W. S. Van Dyke and is based on the 1929 Pulitzer Prize-winning novel of the same name by Oliver La Farge.
Oliver Hazard Perry La Farge II (December 19, 1901 – August 2, 1963) was an American writer and anthropologist.
 In 1925 he explored early Olmec sites in Mexico, and later studied additional sites in Central America and the American Southwest.
 In addition to more than 15 scholarly works, mostly on Native Americans, he wrote several novels, including the Pulitzer Prize-winning, "Laughing Boy" (1929).
 In addition, La Farge's short stories were published in "The New Yorker" and "Esquire" magazines.
 His more notable works, both fiction and non-fiction, focus on Native American culture.
 He spent much of his adult life championing American Indian rights.
 He was president of the Association on American Indian Affairs for several years .
Rockton is an unincorporated community in Vernon County, Wisconsin, United States in the town of Whitestown.
 It is located on the Kickapoo River and is served by Wisconsin Highway 131.
 Rockton is south of Ontario and north of La Farge; these are the closest villages to the community.
Jacob Adolphus Holzer (1858–1938) was a Swiss-born designer, muralist, mosaicist, interior designer, and sculptor who was associated with both John La Farge and Augustus Saint-Gaudens before he left to direct the mosaic workshops of Louis Comfort Tiffany, where he was preceded by his friend from La Farge's studio, the German immigrant Joseph Lauber (1855—1948).
 Holzer worked with Tiffany until 1898.
La Farge Land Office, also known as Orleans Hotel, is a historic commercial building located at Orleans in Jefferson County, New York.
 It was built about 1825 and is a 2-story, five-by-three-bay, side-gabled limestone building in the Federal style.
 A 1 ⁄ -story stone wing extends from the rear of the house and a 1-story wooden addition was completed in 1910.
 It was built by land speculator and French merchant John La Farge, as a land office, residence, and hotel.
 He used it until he returned to New York City in 1838.
Robert von Ranke Graves (24 July 1895 – 7 December 1985), also known as Robert Ranke Graves and most commonly Robert Graves, was an English poet, novelist, critic and classicist.
 In a way similar to Oscar Wilde, Robert Graves was a Celticist and student of Irish mythology, by the influence of his father Alfred Perceval Graves, a celebrated Irish poet — with William Wilde, these families were inheritors of the Gaelic revival.
 He produced more than 140 works.
 Graves's poems—together with his translations and innovative analysis and interpretations of the Greek myths; his memoir of his early life, including his role in the First World War, "Good-Bye to All That"; and his speculative study of poetic inspiration, "The White Goddess"—have never been out of print.
 Irish literature deeply affected Graves' White Goddess theories, specifically the genre aisling.
La Farge Retainer Houses, also known as Biddlecom House and Budlong House, are two historic homes located at Orleans, Jefferson County, New York.
 They were built about 1835.
 The Biddlecom House is a 2-story, front-gabled limestone building with a side hall entry and 1 ⁄ -story rear wing.
 Also on the property is a small frame garage, decorative cast iron fence, stone wall, and stone carriage step.
 The Budlong House is a 2-story, front-gabled limestone building with a 1 ⁄ -story rear wing.
 They were built by land speculator and French merchant, John La Farge, as "model homes" to attract new settlers to the region.
La Fargeville is a hamlet (and census-designated place) in the town of Orleans in Jefferson County, New York, United States.
 The population was 608 at the 2010 census.
 The hamlet is named after John Frederick La Farge, one of the early proprietors of the town.The hamlet of La Fargeville was once a village, but dissolved its municipal corporation in 1922.