From the Genealogical Abstracts from Old Mortuary Records Grass Valley-Nevada City, California, Volume 2 August 6, 1899-March 19, 1911, prepared by Capt. John Oldham Chapter of the National Society Daughters of the American Revolution, page 34:
(Any typographical errors in the original records have been reproduced as is)
Rolfe, I.J., age 82 yrs 2 mo 6 da, Res Nevada City. Widowed white male. Died Nov 14, 1907 of old age. Buried Pine Grove.

Name: Ianthus J. Rolfe (Deputy Collector for IRS)
Birth Place: Maine
Residence Date: 30 Sep 1877
Station or Residence Place: Nevada, California, USA
Year: 1877
Title: Register of Officers and Agents, Civil, Military, and Naval in the Service of the United States
Volume: Volume 1

1870 Census Nevada City, Nevada Co., California:
Name: I J Rolfe
Age in 1870: 43
Birth Year: abt 1827
Birthplace: Maine
Dwelling Number: 277
Home in 1870: Nevada, Nevada, California
Race: White
Gender: Male
Occupation: Printer
Male Citizen Over 21: Y
Personal Estate Value: 500
Real Estate Value: 2000
Household Members:
Name Age
T H Rolfe 45 (his brother Tallman Hathaway Rolfe born Sept. 7, 1824 Rumford, Oxford Co., Maine died Nov. 18, 1874 San Bernardino Co., California) Find a grave #5002537
**I J Rolfe 43 (Ianthus Jerome Rolfe, born Sept. 8, 1826 Rumford, Oxford Co., Maine) Mother Elizabeth Hathaway, father Samuel Rolfe, per California Pioneer & Immigrant Files
Emily Rolfe 37 (maiden name Lindsay) born 1833 Maine
Hattie P Rolfe 13 (Hattie Pierre married name Buffington, buried at Pine Grove Cemetery)
Nellie B Rolfe 9 (Nellie Belden married name Wright born July 7, 1860 California died Nov. 9, 1943 Nevada Co., Ca.)
Emely L Rolfe 5 (born 1865 California)
D T Rolfe 3 (Dwight Tallman Rolfe born 1867 California died 1927
Bell B Rolfe 1 (Belle B. married name Douglass born Dec. 4, 1870 Nevada City, Nevada Co., Ca. died Dec. 24, 1942 Alameda Co., Ca.)

In 1870 Horace C. Rolfe was born in Nevada City, Nevada Co., California and died Jan. 12, 1903 in Flagstaff, Cochise Co., Arizona.