Frederick Schwartz Lyman (July 25, 1837 – April 14, 1918) was a surveyor, rancher, judge, and politician on Hawaiʻi Island.

[3] He was required to record people's ages for the land they owned, but since ancient Hawaii did not use the Christian calendar, he used oral tradition calibrated with a list of major events.

However, a series of disasters struck the otherwise quiet bucolic area in 1868. Letters to his brother David Brainerd Lyman (1840–1914) describe a massive eruption of Mauna Loa on their ranch accompanied by a series of earthquakes from March 27 to March 31.

In the midst of it we saw burst out... what we supposed to be an immense river of molten lava (which afterwards proved to be red earth), which rushed down its headlong course and across the plain below, ... swallowing up everything in its way, trees, houses, cattle, horses, goats and men.

[7] After moving back to Hilo, he started a tanning and saddle business, with William Alfred Todd as partner.

From 1879 through 1888 he acted as secretary for the Royal Governor of Hawaii Island, first Princess Likelike, and then Victoria Kinoiki Kekaulike.

[1] Although not directly involved in the 1893 overthrow of the Kingdom of Hawaii, his fortunes grew as he advocated ties to the United States.

He invested in real estate, and various agricultural enterprises around Hilo, experimenting in coffee, cocoa, and arrowroot.

Son Levi Chamberlain Lyman was born December 16, 1866, and served 25 years as principal of the Hilo Boarding School, from 1897–1922.