About Theodore Solomons
Lived 1870 – 1947 (aged 76). Theodore Solomons was an American explorer, geologist, mountaineer and naturalist.
Theodore Seixas Solomons (1870–1947) was an American explorer and early member of the Sierra Club. From 1892 to 1897 he explored and named the Mount Goddard, Evolution Valley and Evolution Basin region in what is now northern Kings Canyon National Park in eastern California. He was instrumental in envisioning, exploring, and establishing the route of what became the John Muir Trail from Yosemite Valley along the crest of the Sierra Nevada to Mount Whitney
Biography
Early life and ancestors He was born in San Francisco, California, on July 20, 1870, the second son and the fifth of seven children of Hannah Marks, an influential San Francisco educator and civic worker and Gershom Mendes Seixas Solomons. He had relocated to San Francisco from New York City during the Gold Rush, and founded Congregation Emanu-El in 1854. He was also the first president of any West Coast lodge of B'nai B'rith. His great-grandfather was Gershom Mendes Seixas, of Portuguese-Jewish descent (1745–1816), the "Patriot Rabbi", the first native-born Rabbi in the United States.
Solomons later recalled that the idea that resulted in the John Muir Trail originated in his adolescence. "The idea of a crest-parallel trail came to me one day while herding my uncle's cattle in an immense unfenced alfalfa field near Fresno. It was 1884 and I was 14."
Marriage and family Solomons married three times. He married as his first wife, on March 29, 1901, at Dawson Creek, British Columbia, Canada, Rozella M. Gould of Dawson Creek. They were later divorced. There were no children from this marriage. He married on January 8, 1909, in New York City, as his second wife, Katherine Gray Church, born on May 6, 1881, in New York City the only daughter of Henry Seymour Church and Margaretta Josephine Gray. She died on February 7, 1971, in Cherryland, Alameda County, California. Her mother, a published writer and singer, was born into a family with deep New England roots that trace back to the Rev. Mr. Blackleach Burritt, and Governor Thomas Welles. After his second wife was committed to a mental institution, he married Yvonne Robinson who died in 1965. They had no children.
Theodore and Katherine were the parents of three children: Eleanor Susan Brownell Anthony "Toni" Solomons (1911–2006), David Seixas Solomons (1913–1961), and Leon Henry Solomons (1915–1988). Eleanor was married to Israeli biologist Benjamin Elazari Volcani.
They lived at a house he named the Flying Spur, which he built on of land that juts out over the Merced River Canyon. It is located at in the Stanislaus National Forest adjacent to Yosemite National Park.
Explorations
In his explorations, Solomons correctly determined the courses of the upper branches of the San Joaquin River. In 1892, accompanied by Joseph Nisbet LeConte and Sidney I. Peixotto, he crossed from Mount Lyell by way of Rush Creek to the base of Mount Ritter and ascended the peak. In 1895, Solomons took his most notable trip, accompanied by Ernest C. Bonner. Ascending the South Fork of the San Joaquin they came to the group of mountains now designated the Evolution Group, named by Solomons. The highest of these he called Mount Darwin (after the evolutionist Charles Darwin), and the others he named Haeckel, Wallace, Fiske, Spencer, and Huxley, after famous evolutionists of the day.
Continuing their explorations, Solomons and Bonner ascended Mount Goddard, then made their way down to Simpson Meadow via North Goddard Creek, and were the first to make this section known. Solomons’ excursions in the next two years added details to the knowledge of Sierra topography, but his principal contribution was an accurate map which he drafted and presented to the Sierra Club in 1896.
Although Solomons named the peaks of the Evolution Group and was the first to accurately map the region, the report from his 1895 trip is not the first written description of the area. As noted by Francis Farquhar in 1925, John Muir was the first to describe the then-unnamed Evolution Group of peaks. Muir's descriptions of his fall 1873 trek up the San Joaquin River provide enough geographic detail to make it clear that he explored Goddard Canyon and climbed through Evolution Valley to the peaks of the Evolution Group.
Death and memorials He died in Los Angeles, California, on May 27, 1947. Mount Solomons (13016') is named after him as well as the long-distance trail the Theodore Solomons Trail.
Don’t just read it —
keep it.
Full-length biographies made to live with: read them, listen on the way to work, watch them tonight.
- E-book
- Audio
- Video
Instant download · yours to keep · every purchase keeps this site free
Important facts
People in Theodore Solomons's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Theodore Solomons's
Frequently asked questions
Who was Theodore Solomons?
American explorer (1870–1947)
When was Theodore Solomons born?
Theodore Solomons was born on 20 July 1870 in San Francisco.
When did Theodore Solomons die?
Theodore Solomons died on 27 May 1947 in Los Angeles.
What was Theodore Solomons's occupation?
Theodore Solomons was an explorer, geologist, mountaineer and naturalist.
What nationality was Theodore Solomons?
Theodore Solomons was American.
Sources & further reading
· Wikipedia: Theodore Solomons
Cite this page
APA: Biography.guide. (2026). Theodore Solomons. https://biography.guide/theodore-solomons/
MLA: "Theodore Solomons." Biography.guide, https://biography.guide/theodore-solomons/.
Chicago: "Theodore Solomons." Biography.guide. https://biography.guide/theodore-solomons/.
Data last updated: 2026-09-26 · Spot an error? Report a correction.
Page generated 2026-09-27 05:13 UTC