Of the nine one-year terms that he served as county supervisor between 1856 and 1877, Jensen was the Chairman of the San Bernardino County Board of Supervisors four times. His Agua Mansa home, the Jensen Alvarado Ranch, is a registered California Historical Landmark (Number 943) and is listed on the National Register of Historic Places. He took his mate"s exam in Denmark and thereafter made several trips around Cape Horn, arriving in California by 1844.
Jensen was captain of his own vessel for 20 years.
He arrived in San Francisco in 1848. With news of the California Gold Rush, his crew jumped ship and→ he went to Sacramento and opened a store, selling items to the gold miners.
lieutenant was here that he met the Californio Ignacio Alvarado. At Alvarado"s urging Jensen moved to Southern California, settling in Agua Mansa around 1854.
Her parents were Francisco and Juana Maria (Avila) Alvarado.
Jensen had several careers after his early years as a sea captain. In addition to being a rancher and vintner on his Southern California properties, he owned a sawmill and a store, and served as a politician.