In 1854 Menlo Park received its official name when two Irishmen, Dennis J. Oliver and D. C. McGlynn, purchased 1,700 acres (some sources say it was 640 acres) bordering County Road, now El Camino Real, and built two houses with a common entrance. Across the drive they erected a huge wooden gate with tall arches on which the name of their estate was printed in foot-high letters: “MENLO PARK”, with the date, August 1854.

~  City site