The namesake here has got to be architect Robert David Farquhar (1872-1967). My rationale: this street was named in 1927 on a tract developed by Walter H. Leimert, and a 1926 issue of Architectural Digest showcased Leimert’s own house – designed by Robert D. Farquhar. Born in Brooklyn and raised in Newton, MA, Farquhar graduated from both Harvard and MIT, then attended École des Beaux-Arts in Paris. In 1903, he married tennis champ Marion Jones (1879-1965), daughter of Santa Monica cofounder Senator John P. Jones. This conspicuous union led to a lot of high-profile California clients for Farquhar: his many projects would include the Festival Hall at San Francisco’s 1915 Panama-Pacific Expo (since demolished), Beverly Hills High School, the William Andrews Clark Jr. Library in West Adams, Clark’s “island mausoleum” at Hollywood Forever, the exclusive California Club in DTLA, and the Canfield–Moreno estate in Silver Lake. He also assisted in designing The Pentagon in 1941. The Farquhars had three sons but divorced in 1926.