Leonard John Rose | |
|---|---|
 Portrait of Rose by Carleton E Watkins, c. 1880 | |
| Member of the California Senate from the 39th district | |
| In office January 3, 1887 – January 7, 1889 | |
| Preceded by | District created |
| Succeeded by | Joseph E. McComas |
| Personal details | |
| Born | 1827 Bavaria, Germany |
| Died | May 17, 1899 Los Angeles, California, U.S. |
| Political party | Democratic |
| Spouse |
Amanda Jones (after 1851) |
| Children | 9 |
| Known for | American pioneer, viticulturist, and California State Senator |
Leonard John Rose (1827 – May 17, 1899) was a California pioneer and politician who served in the California State Senate. He was one of the leaders of the ill-fated Rose-Baley Party, the first emigrant wagon train to attempt the journey from New Mexico to California via Beale's Wagon Road. Rose is the namesake of Rosemead, California.