John Peter Arbogast was descended from early German pioneers who first settled in Maryland in 1751 then moved to Pennsylvania. After arriving in Nevada County in 1852, John wrote his brother, Jacob, telling him to come to California.
Much more wonderful information and photographs about this family in a book, Ranches and Agriculture in Nevada County, by Maria Brower.

Contributor: Deanna (47902656) •
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Name: Jacob Arbegast
[Jacob Arbogast]
Age in 1870: 43
Birth Year: abt 1827
Birthplace: Pennsylvania
Dwelling Number: 972
Home in 1870: Nevada, Nevada, California
Race: White
Gender: Male
Occupation: Farmer
Male Citizen Over 21: Y
Personal Estate Value: 1000
Real Estate Value: 3000
Household Members:
Name Age
Jacob Arbegast 43
Eliza Arbegast 33
John Arbegast 16 (Jonathan)
Catherine A Arbegast 13
James W Arbegast 11
Peter Arbegast 10 (John Peter)
Eliza Arbegast 5
Jacob L. Arbegast 3
Fred Arbegast 1 (Frederick Luther Arbogast born Jan. 2, 1869 in California, died March 22, 1942 in Alameda County, California)

The 1910 census in Nevada City, Nevada Co., California listed Jacob at age 83
wife Eliza at age 72

son Jonathan age 56 (born about 1855 in Pennsylvania, died Jan. 8, 1917 in Nevada County, California)

son Cary S. age 34(Cary Summer Arbogast born July 21, 1875 in Nevada City, died April 24, 1970 in Nevada County, CA)
burial unknown at this time, it could be at Pine Grove or perhaps Forest View but still not determined.

Cary's wife Minnie Arbogast age 25 (maiden name Kinkead, she died Feb. 25, 1939 in Nevada County, CA) burial unknown at this time, it could be at Pine Grove or perhaps Forest View but still not determined.

The 1900 census listed
Jacob Arbogast age 74
Eliza Arbogast age 63
Children:
Jonathan age 46
Aaron A. age 26
Cary S. (son) age 24
Elsie E. age 22 (Elsie Eva Arbogast born June 18, 1878 in Nevada County, California died May 5, 1972 in Carmichael, Sacramento Co, California, married name Taylor)

Son Perry was listed separate in the 1910 census with his wife Lillie, he was born Dec. 2, 1870 in Nevada City, Nevada Co., California and died June 28, 1919 in Nevada County, CA.