Question: Seamour and Gerte Shavin House was designed by which Welsh-American architect?
Context: The Seamour and Gerte Shavin House is a Frank Lloyd Wright designed Usonian home in Chattanooga, Tennessee.  The house was added to the National Register of Historic Places in 1993. Frank Lloyd Wright (born Frank Lincoln Wright, June 8, 1867 – April 9, 1959) was a first generation Welsh-American architect, interior designer, writer and educator, who designed more than 1,000 structures, 532 of which were completed.  Wright believed in designing structures that were in harmony with humanity and its environment, a philosophy he called organic architecture.  This philosophy was best exemplified by the Fallingwater house (1935), which has been called "the best all-time work of American architecture". The Charles W. Merrill House is a 6,000-square-foot residence designed by regionally prominent architect Walter H. Ratcliff, of Berkeley, for mining engineer and San Francisco businessman Charles Washington Merrill.  Built in 1938, the house's architecture reflects elements of the Spanish Colonial Revival, but with its two stories, low-pitched roofline, and second-story balcony on the front elevation, the house is most characteristic of the Monterey style popular in large California homes built between 1925 and 1940.  The house and grounds were designed as a small country estate.  The house occupies a hillside location and is sited on two stonework terraces, pierced by three stone staircases placed among gardens designed by landscape architect Mabel Symmes in 1938-1939.  The house is significant under Criterion B for its association with the final stage of Charles W. Merrill's long and distinguished career.  Merrill lived in the house during the period in which he presided over a highly diversified engineering corporation, with worldwide influence, that had grown from Merrill's pioneering patents and discoveries of the 1890s and 1900s.  The house also is significant under Criterion C as an example of the eclecticism that architect Walter H. Ratcliff brought to his architecture.  Built in the mature phase of Ratcliff's career, the Merrill House with its elements of Spanish Colonial Revival and Monterey styles reflect Ratcliff's distinctive blend of academic eclecticism and keen awareness of regional topography, climate, and setting. The Dwight Perkins House is a historic house located at 2319 Lincoln Street in Evanston, Illinois.  The house was built in 1904 for architect Dwight H. Perkins and children's author and illustrator Lucy Fitch Perkins.  Perkins designed his house in a style heavily influenced by the Prairie School and the Arts and Crafts Movement.  The house was built from wood and stucco, materials characteristic of both styles which let the house blend into the surrounding nature.  Its exterior decorative features include bracketed eaves, casement windows, trellises, and a half-timbered gable.  Landscape architect Jens Jensen, a friend of the Perkinses, designed the house's surroundings, which include a reflecting pool.  The inside of the house incorporates horizontal bands of windows which let in sunlight, unpainted wood features, and an open floor plan. Intheoaks, also known as In-the-oaks, is a historic estate and a national historic district located at Black Mountain, Buncombe County, North Carolina.  The district encompasses nine contributing buildings, two contributing sites, seven contributing structures, and four contributing objects associated with a country estate of the 1920s.  The main house was built in 1921-1923, and is a four-level, "U"-shaped Tudor country manor house with an oblique wing.  It was designed by New York architect Frank E. Wallis, with a large recreation wing containing a ballroom, gymnasium, bowling alley, and indoor swimming pool designed by noted architect Richard Sharp Smith.  Also on the property are the contributing Caretaker's Cottage (1923), agricultural and service outbuildings, main entrance gates designed by Smith and Carrier (1922), and landscape designed by noted landscape architect Chauncey Beadle The property is known as Camp Henry, a camp for young people and the Episcopal Diocese of Western North Carolina offices are located on the estate. The Robert P. Parker House is a house located in the Chicago suburb of Oak Park, Illinois, United States.  The house was designed by American architect Frank Lloyd Wright in 1892 and is an example of his early work.  Real-estate agent Thomas H. Gale had it built and sold it to Robert P. Parker later that year.  The house was designed by Wright independently while he was still employed by Adler and Sullivan, something architect Louis Sullivan forbade.  The Parker House is listed as a contributing property to a U.S. federally Registered Historic District. Obed Taylor (April 27, 1824 - August 2, 1881) was an architect who designed many notable buildings in early Utah that survive on the National Register of Historic Places.  Taylor's works include the Salt Lake Assembly Hall on Temple Square, the Salt Lake 18th Ward meetinghouse, and Ogden's Z.C.M.I. and First National Bank Block.  Though Thomas L. Allen has been credited with being the architect of the Summit Stake Tabernacle, Taylor approved of the plans and likely assisted Allen who was untrained as an architect.  Obed Taylor worked in partnership with William H. Folsom on many projects including the Deseret National Bank, ZCMI's cast-iron storefront (1876), and the Feramorz Little residence.  He died at the height of his architectural career in 1881.  Funeral services were held in the Salt Lake 18th Ward meetinghouse which he had recently designed.  The Walker Opera House as well as a building at the University of Deseret were designed by Taylor but completed after his death. The Thomas H. Gale House, or simply Thomas Gale House, is a house located in the Chicago suburb of Oak Park, Illinois, United States.  The house was designed by famous American architect Frank Lloyd Wright in 1892 and is an example of his early work.  The house was designed by Wright independently while he was still employed by Adler and Sullivan, something architect Louis Sullivan forbade.  The house is significant because of what it shows about the architect's early development period.  The Parker House is listed as contributing property to a U.S. federally Registered Historic District.  The house was designated an Oak Park Landmark in 2002. The Andrew O. Anderson House, also known as the A. O. Anderson House, is a Prairie style house in the city of DeKalb, Illinois, United States.  The house was designed by American architect John S. Van Bergen around 1913 and built around 1916.  Van Bergen designed many Prairie homes and was an associate of famous architect Frank Lloyd Wright.  Throughout its history the Anderson House has been mistaken for a residence designed by Wright.  The Anderson House contains many elements common to both Prairie style in general as well as some of Wright's early Prairie designs.  The house was constructed for DeKalb clothing merchant Andrew O. Anderson about 14 years after an original house project on the site fell through. David Richard Jones (1832-1915) was a Welsh-American architect and poet.
Answer: Frank Lloyd Wright