Analysis of information sources in references of the Wikipedia article "John B. Magruder" in English language version.
Only one incident has been recorded which a Californio's rancho changed owners through other than legal means in San Diego in the 1850s. Sometime during 1850 or 1851 Juan Forster, agent in charge of Rancho Santa Clara de Jamacha, allowed Captain John Magruder to use the ranch for grazing horses belonging to the United States cavalry detachment stationed in the community. About nine years later Magruder visited Apolinaria Lorenzana, the owner of the rancho, in San Juan Capistrano, hoping to buy the property. According to her recollection, she refused to sell or rent it to Magruder since she had never received any remuneration from him for his previous use of the property. After an angry exchange Magruder returned to San Diego and seized the property. Miss Lorenzana claimed that she never received any payment for her property and after being intimidated by Magruder never pressed her claim.