The 1900 Census
Julius, born Nov 1863 in Oregon to both parents born in Germany
Delphinia, Nov 1866, born in Germany immigrated 1881.
married 12 years (Census enumerated 14 June, so marriage sometime between 15 June 1887 and 13 June 1888)
The 1910 Census has them married 22 years, census enumerated 15 April, so now married sometime between 15 June 1887 and 14 April 1888.
---------Parents of Julius------------
The 1920 does not have years married, but it shows Delphine immigrated in 1870.It also shows Julius's father born in Alasce (appears to be Alasce, however, the correct spelling would be Alsace) (spoke Frence) and mother in Honover (Germany).
--The 1880 census shows the A. Goldsmith that you suggested might be the father, 60, born in France; Marietta, 43, in Hanover.This matches what is enumerated about Julius in the 1920 census.So, I agree there is a good possibility, more work might confirm.
--The 1870 Census shows Henrietta 33, not Marietta.It shows Isaac J, age 8, versus Julius.
The 1880 Census shows the children of A. and Hennrietta:
Rosa 19, CA
Julius 17, CA
Saml, 15, Oregon
---1900, a Sam S. Goldsmith in Albany, Linn County, OR, born April 1865
Bertha 13, OR
Celia 11, Cal
Charlie 7, OR
Lena 5, OR
Zida 1, OR
--In the 1920 census, the family listed just above Julius and Delphine:
Celia?, age 50
Bertha, sister, age 54
Zida A, 40.
---so, yes, it strongly appears "A. Goldsmith" is the father.
---Julius was then "Isaac Julius Goldsmith".I couldn't find any name used by him after 1870 except Julius.
The 1900 census has "Aron" Goldsmith, born Jan 1820
Annetta, born Nov 1836
Chas, born August 1872.
The 1910 census for Oregon City, Clackamas, OR
Hor Antte (as transcribed, but could be Henrietta or Annette, age 75 born in Germany, head of household
Cacilia (as transcribed, probably Cecilia)
Berthia (as transcribed, Bertha)
Zeada (as transcribed, Zeda)
--so Aron died between 1900 and 1910.
--The Oregon Historical Records: http://genealogy.state.or.us/http://genealogy.state.or.us/ has an Aaron Goldsmith death 11/19/1904 in Portland.
--That database shows a Henrietta Goldsmith died 3/5/1919
--A marriage in 1927 between a Bertha Goldsmith and a Lester E. Bailey in Benton County...could be a different Bertha.
The Lane County genealogy: http://www.rootsweb.ancestry.com/~orlane/http://www.rootsweb.ancestry.com/~orlane/
Look in the paragraph titled: "Lane County Obituaries"." Arline has collected most of the obituaries, birth, marriage, and anniversary announcements ... and from the Junction City Times from the late 1890's-1908 and 1973 to the present and will do lookups for you.
--This Arline "might" have a suggestion on obtaining marriage records circa 1887-1888.She might also have other records, that might at least identify a date.Just click on her name for a pre-formed email.