| Last Name | First Name | Event* | Day | Month | Year | Publication Date | Wife | Husband | Mother | Father | Locaton of Event | ||
| Jack | Nathaniel | d | 7 | Nov | 1857 | 28 | Sep | 1857 | Calapoosa, Oregon | ||||
| Jacks | Hamlet | d | 10 | Mar | 1857 | 5 | Mar | 1857 | Napa Valley | ||||
| Jackson | Miss Mary | m | 18 | Apr | 1857 | 16 | Apr | 1857 | Bearins, Samuel | San Francisco | |||
| Jackson | Samuel J. | m | 1 | Aug | 1857 | 26 | Jul | 1857 | Pierson, Alice M. | Georgetown, El Dorado County | |||
| Jackson | Seaman | d | 19 | Mar | 1857 | 16 | Mar | 1857 | J. R. Whiting ship | ||||
| Jackson | son | b | 28 | Jul | 1857 | 28 | Jul | 1857 | Jackson, Mr. T. J. | Sacramento | |||
| Jackson | son | b | 29 | Mar | 1857 | 20 | Mar | 1857 | Jackson, Sinclair | Red Bluff | |||
| Jacobs | Adolphine | m | 21 | Dec | 1857 | 17 | Dec | 1857 | Armbruester, Daniel | San Francisco | |||
| Jacobs | G. | m | 19 | May | 1857 | 11 | May | 1857 | Holden, Miss J. M. | Rough and Ready | |||
| Jacobs | Miss Ellen Sophia | m | 16 | Jun | 1857 | 31 | Mar | 1857 | Flanders, Colin P. | Great Salt Lake City | |||
| Jager | dau | b | 18 | May | 1857 | 13 | May | 1857 | Jager, C. J. | Shasta | |||
| Jamison | Mary | m | 15 | Jul | 1857 | 13 | Jul | 1857 | Ingraham, William | San Francisco | |||
| Jane | Amelia | m | 13 | Oct | 1857 | 1 | Oct | 1857 | Sackett, Albert | Camp, on Little Shasta | |||
| Janes | Kate Hallet | d | 2 | Jul | 1857 | 24 | Jun | 1857 | Janes, Mrs. Julia N. | Nevada | |||
| Janeson | Henry | d | 30 | Sep | 1857 | 30 | Sep | 1857 | Contra Costa House, San Francisco | ||||
| Janssen | infant dau | d | 8 | Dec | 1857 | 6 | Dec | 1857 | Janssen, Leontine | Janssen, Ernest | San Francisco | ||
| Jauncey | William | m | 18 | Jun | 1857 | 15 | Apr | 1857 | Presho, Blandena Augusta | New York | |||
| Jefferson | George H. | m | 24 | Mar | 1857 | 19 | Mar | 1857 | Quivey, Miss Ann Elizabeth | San Jose | |||
| Jenkins | Charles J. | d | 18 | Jun | 1857 | 10 | May | 1857 | New Orleans Charity Hospital | ||||
| Jenkins | infant daughter | d | 16 | Jun | 1857 | 7 | Jun | 1857 | Jenkins, Henry | St. Louis, Sierra County | |||
| Jenkins | Mrs. Abigal | d | 8 | Jun | 1857 | 2 | Jun | 1857 | Jenkins, Henry | St. Louis, Sierra County | |||
| Jenks | Lewis Nelson | d | 15 | Jun | 1857 | 10 | Jun | 1857 | Jenks, Mrs. N. B. | Jenks, Mr. N. B. | Jenks' Ranch, Calaveras County | ||
| Jennings | dau | b | 15 | Sep | 1857 | 13 | Sep | 1857 | Jennings, James R. | Marysville | |||
| Jennings | son | b | 9 | Nov | 1857 | 2 | Nov | 1857 | Jennings, Alfred J. | La Porte, Sierra County | |||
| Jennings | dau | b | 15 | Mar | 1857 | 17 | Feb | 1857 | Jennings, John | Port Wine, Sierra County | |||
| Jerganson | J. F. | m | 18 | Mar | 1857 | 9 | Jan | 1857 | Neilson, Caroline | Kaysville, Utah Territory | |||
| Jerganson | R. F. | m | 18 | Mar | 1857 | 9 | Jan | 1857 | Mason, J. B. | Kaysville, Utah Territory | |||
| Jessen | J. | m | 11 | Apr | 1857 | 30 | Mar | 1857 | Nissen, Miss Anne Christine | San Francisco | |||
| Jewell | William | d | 4 | Mar | 1857 | 25 | Feb | 1857 | Brown's Flat, Tuolumne County | ||||
| Jewett | Almira | div | 22 | Mar | 1857 | 22 | Mar | 1857 | Jewett, William Cornell | Sacramento | |||
| Jewett | Almira | div | 22 | Feb | 1857 | 21 | Feb | 1857 | Jewett, Wm. Cornell | San Francisco | |||
| Jewett | William Cornell | div | 22 | Mar | 1857 | 22 | Mar | 1857 | Jewett, Almira | Sacramento | |||
| Jewett | Wm. Cornell | div | 22 | Feb | 1857 | 21 | Feb | 1857 | Jewett, Almira | San Francisco | |||
| Jimena | Angoustias | m | 13 | Jun | 1857 | 20 | May | 1857 | Hartnell, Juan | Santa Barbara | |||
| Jircat | Mr. | d | 20 | Jun | 1857 | 10 | Jun | 1857 | Chowcilla, near Morris' Rancho | ||||
| Jocelyn | P. J. | m | 24 | Dec | 1857 | 20 | Dec | 1857 | Wait, M. A. | Marysville | |||
| Jocum | A. | m | 26 | May | 1857 | 18 | May | 1857 | Bfosch, Miss Louise | Poverty Hill | |||
| Johns | Mary Borge "Dutch Mary" | d | 30 | Jul | 1857 | 29 | Jul | 1857 | San Francisco | ||||
| Johns | Miss Mary Ann | d | 30 | Dec | 1857 | 21 | Dec | 1857 | Negro Hill, El Dorado County | ||||
| Johnson | A. | m | 5 | May | 1857 | 26 | Apr | 1857 | Young, Miss S. M. | Clinton, Contra Costa County | |||
| Johnson | Charles | d | 18 | Aug | 1857 | 15 | Aug | 1857 | Bidwell's Bar, Butte County | ||||
| Johnson | D. Lylea, infant son | d | 27 | Nov | 1857 | 26 | Nov | 1857 | Johnson, B.F. | Sacramento | |||
| Johnson | dau | b | 4 | Mar | 1857 | 1 | Mar | 1857 | Johnson, Newman | Sacramento | |||
| Johnson | Edwin | d | 25 | Jun | 1857 | 14 | Jun | 1857 | Johnson, Jugurtha W. | Shasta | |||
| Johnson | G. W. | d | 15 | Aug | 1857 | 8 | Aug | 1857 | Petaluma | ||||
| Johnson | H. N. | m | 24 | Jun | 1857 | 14 | Jun | 1857 | Patton, Mrs. Rachel C. | Shaw's Flat | |||
| Johnson | Harriet | m | 21 | Nov | 1857 | 18 | Nov | 1857 | Hall, James | Sacramento | |||
| Johnson | Henry M. | d | 15 | Jun | 1857 | 20 | Mar | 1857 | Salt Lake City | ||||
| Johnson | Jane C. | d | 13 | Feb | 1857 | 2 | Feb | 1857 | Johnson, Augustus | San Leandro | |||
| Johnson | John | m | 4 | Sep | 1857 | 25 | Aug | 1857 | Crosby, Mrs. Catherine | Sacramento | |||
| Johnson | John | d | 12 | Mar | 1857 | 11 | Mar | 1857 | clipper ship Neptune's Car | ||||
| Johnson | Joseph C. | d | 29 | Sep | 1857 | 26 | Sep | 1857 | Johnson, Capt. J. M. | San Francisco | |||
| Johnson | M. M. | m | 26 | Aug | 1857 | 4 | Jul | 1857 | Myers, Tobias | Portland | |||
| Johnson | Miss | m | 2 | Jul | 1857 | 20 | May | 1857 | Ridglely, Esq., Andres | Johnson, Hon. Reverdy | Sacramento | ||
| Johnson | Miss | m | 16 | Apr | 1857 | 14 | Apr | 1857 | Fabricius, George A. | San Francisco | |||
| Johnson | Mr. | d | 6 | Aug | 1857 | 1 | Aug | 1857 | Granite Bay | ||||
| Johnson | Mr. Aaron | m | 17 | Oct | 1857 | 15 | Oct | 1857 | Holmes, Miss Carolina | San Francisco | |||
| Johnson | Mrs. E. | d | 5 | Feb | 1857 | 2 | Feb | 1857 | San Francisco | ||||
| Johnson | Mrs. Fidelia | d | 15 | Sep | 1857 | 12 | Sep | 1857 | Johnson, J. X. | Yolo County | |||
| Johnson | Robt. M. | m | 29 | May | 1857 | 27 | May | 1857 | Curry, Emma | Hansonville | |||
| Johnson | Sarah | d | 26 | Aug | 1857 | 21 | Aug | 1857 | Johnson, William H. | San Francisco | |||
| Johnson | son | b | 30 | Apr | 1857 | 28 | Apr | 1857 | Johnson, Josiah | Sacramento | |||
| Johnson | son | b | 26 | Dec | 1857 | 16 | Dec | 1857 | Johnson, Serry | Red Bluffs | |||
| Johnson | son | b | 12 | Nov | 1857 | 29 | Oct | 1857 | Johnson, James | Columbia | |||
| Johnson | son | b | 11 | Nov | 1857 | 29 | Oct | 1857 | Johnson, James | Columbia | |||
| Johnson | Thomas | m | 20 | May | 1857 | 18 | May | 1857 | Kent, Miss Catherine | San Francisco | |||
| Johnson | Thomas | d | 18 | Nov | 1857 | 15 | Nov | 1857 | San Francisco | ||||
| Johnston | Elizabeth S. | m | 25 | Jun | 1857 | 23 | Jun | 1857 | Collins, Richard Wesley | San Francisco | |||
| Jones | Caroline | d | 26 | Sep | 1857 | n/a | Aug | 1857 | Wiggins, Mr. | nr Rocky Ford, on the Humboldt | |||
| Jones | Daniel | d | 10 | Dec | 1857 | 6 | Dec | 1857 | Nevada | ||||
| Jones | H. W. | m | 11 | May | 1857 | 25 | Apr | 1857 | Cornell, Miss Anne | Placerville | |||
| Jones | John | m | 11 | Sep | 1857 | 7 | Sep | 1857 | Dunlap, Miss | Stanislaus River | |||
| Jones | John M. | m | 25 | Nov | 1857 | 19 | Nov | 1857 | Pennell, Isabella | Suisun | |||
| Jones | Mary S. | m | 13 | Jun | 1857 | 10 | Jun | 1857 | Stetson, James W. | Stockton | |||
| Jones | Miss Mary | m | 15 | May | 1857 | 13 | May | 1857 | Nelson, David | San Francisco | |||
| Jones | son | b | 15 | Apr | 1857 | 11 | Apr | 1857 | Jones, E. E. | San Francisco | |||
| Jones | W. H. | d | 14 | Mar | 1857 | 3 | Mar | 1857 | nr Quartzburgh | ||||
| Jones | Wm. | d | 15 | Sep | 1857 | 12 | Sep | 1857 | San Francisco | ||||
| Jones | Wm. T. | m | 14 | Aug | 1857 | 14 | Jul | 1857 | Meader, Elizabeth | Yamhill County, Oregon | |||
| Jordan | E. N. | d | 3 | Dec | 1857 | 25 | Nov | 1857 | Stockton | ||||
| Jordan | John F. | m | 31 | Mar | 1857 | 23 | Mar | 1857 | Kelly, Miss Rachael | Shasta | |||
| Jordan | Sarah E. H. | d | 28 | Dec | 1857 | 22 | Dec | 1857 | Jordan, Sarah S. | Jordan, Reason | San Jose | ||
| Jordan | Sumner C. | d | 22 | Sep | 1857 | 18 | Sep | 1857 | Iowa Hill, Placer County | ||||
| Joseph | E. Carson | d | 4 | Feb | 1857 | 15 | Sep | 1856 | Granada, Nicaragua | ||||
| Josephi | Frances | d | 23 | Jun | 1857 | 20 | Jun | 1857 | Josephi, Clara | Josephi, Robert | San Francisco | ||
| Judd | Lizzie Kinan | m | 26 | Oct | 1857 | 29 | Sep | 1857 | Wilder, S. G. | Judd, Dr. G. P. | Honolulu | ||
| Julian | Frederick | d | 24 | Oct | 1857 | 5 | Aug | 1857 | New York | ||||
| Julian | N. T. | m | 11 | Aug | 1857 | 9 | Aug | 1857 | Clark, Eliza | Dutch Flat | |||
| Julian | Philip S. | d | 26 | Mar | 1857 | 22 | Mar | 1857 | Marysville | ||||
| Julien | Philip S. | d | 24 | Mar | 1857 | 22 | Mar | 1857 | Marysville | ||||
| Julien | Philip S. | d | 27 | Mar | 1857 | 23 | Mar | 1857 | Marysville | ||||
| Jupp | Mary | m | 15 | Aug | 1857 | 4 | Jun | 1857 | Starley, James | Salt Lake City |
* Event (b m d div) = birth, married death, divorce