"Orion Clemens (b. ca. 1875) was the older child of Samuel and Alexandra Clemens and the brother of Ophelia Clemens. He was a child during the Second Mexican War, and was witness to some of the damage inflicted upon San Francisco."@en . . "Unrevealed"@en . "Direct"@en . "Orion Clemens"@en . "How Few Remain"@en . "Orion Clemens (b. ca. 1875) was the older child of Samuel and Alexandra Clemens and the brother of Ophelia Clemens. He was a child during the Second Mexican War, and was witness to some of the damage inflicted upon San Francisco."@en . "c. 1875"@en . . "Samuel Clemens"@en . . . "Samuel and Alexandra Clemens"@en . . . . . . . .