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Alameda Jane Johnson

Alameda Jane Johnson traveled the overland trail to Utah and later co-founded the pioneer settlement of St. Johns, Arizona. She managed a household and raised a family during a period of intense range conflicts on the territory's high plateau.

Daughter of Sir John Johnson and Clarissa Palmeter. Wife of Henry John Platt Sr. Mother of Dr. William Erastus Platt.

Focus

Crossed the plains to Utah as a young woman

Settled in the volatile St. Johns mission in Apache County

Mother of Dr. William Erastus Platt

Raised a large family under challenging frontier conditions

Alameda Jane Johnson

was born on September 26, 1833, in Wyoming, New York, the daughter of Sir John Johnson and Clarissa Palmeter. Her childhood occurred during a period of religious revivalism and expansion in western New York, an area often referred to as the burned-over district. Her family converted to the Church of Jesus Christ of Latter-day Saints, which set them on a path of migration.

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Alameda traveled across the plains to Utah as a young woman, experiencing the physical hardships of the wagon trail. In Utah, she met and married Henry John Platt Sr., an English convert who had emigrated to join the LDS community. Together they raised a family in Utah, contributing to the establishment of early agricultural settlements.

The St. Johns Conflict

In the 1880s, the family was called to colonize St. Johns in Apache County, Arizona Territory. The high plateau of northern Arizona was a demanding environment, with cold winters, dry summers, and a short growing season. Furthermore, the settlement was a site of intense conflict. The newly arrived Mormon farmers clashed with the established non-Mormon stockmen, who controlled the local courts and newspapers, an alliance known as the St. Johns Ring.

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In this environment of political and physical precarity, Alameda managed their household. She preserved food, made soap and clothing, and supported her family's agricultural efforts. Her son, William Erastus Platt, was born and raised during these frontier migrations, eventually studying medicine and returning to practice in eastern Arizona.

A simple stone house in a barren desert landscape with wooden fences
A typical homestead in St. Johns, Arizona Territory, during the period of intense frontier settlement. *(AI-Generated Illustration, 2026)*

Legacy of Endurance

The constant demands of pioneer life took a heavy physical toll. Alameda died in St. Johns on March 14, 1889, at the age of fifty-five. Her death predated her husband's relocation to the Gila Valley and the subsequent medical career of her son, Dr. William Erastus Platt. However, her endurance on the plains and in the volatile St. Johns mission provided the foundation of strength that her descendants carried into the twentieth century.

YearEvent
1833Born September 26 in Wyoming, New York, to Sir John Johnson and Clarissa Palmeter
1850sTravels across the plains to Utah with her family
1860sMarries Henry John Platt Sr. in Utah
1880sRelocates to the St. Johns colonizing mission, Apache County, Arizona Territory
1889Dies March 14 in St. Johns, Arizona, at age 55

Sources

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