I hope you'll be contacted by two people who might have posted your Hill Family Tree in Ancestry.com. The lady from Texas maybe doesn't have the same family. Be sure to ask her about Henry Hill to ensure that's her Hill family.
The gentlemen definitely has your Hill in his Family Tree.
In 1870 Henry Hill, wife and children were living in Eugene, Lane Co., OR.
Henry b. TN, 54 yrs old, photographer.
Sarah J., wife, b. MO, 40.
Winthrop, son, b. OR, 16.
Mary C., b. OR, 12.
Joseph W., b. OR, 9.
In 1880 most of the family is still living in Eugene.
Henry, b. TN, 65, keeping boarders.
Sarah J., b. MO, 57, asthma.
Mary, b. OR, 22, teacher.
Joseph, b. OR, 20. no occupation shown
Louisa Breeding, servant, housekeeper.
Henry and Sarah must have died between 1881-1889. Mary either was married or died.
In 1900 Joseph and family are living in Junction, Lane Co., OR.
Joseph, b. OR, July 1860, marr @ 39, marr 8 yrs, farmer, father born=TN and mother born=SC. This doesn't match the previous Censuses, therefore, this Joseph might not be your Joseph.
Mary, wife, b. OR, Sept 1861, marr @ 28, had given birth to one child who was alive in 1900.
Merrill, son, b. OR, Nov. 1892.
In 1910 the family was living in South Junction, Lane Co.
Joseph B., b. OR, 49, marr 18 yrs, father born=TN, mother born=SC, farmer.
Mary E., b. OR, 40, had given birth to three children but only two alive in 1910.
Merrell D., b. OR, 17, farm laborer home farm.
Clark, b. OR, 5.
A Merrell De Witt Hill was living in Junction City, Lane Co., OR in 1917. He was born 5 Nov 1893, Junction City. He was a farm laborer for C. L. Hill, Palouse, WA, Single. Source: World War I Draft Registration Cards 1917-18, www.ancestry.com.
In 1920 Joseph was living in Irving, Lane Co.
Joseph B., b. OR, 59, general farmer, father born=KY, mother b.=TN.
Mary E., b. OR, 51.
E. Clark E., b. OR, 15.
An Eugene Cla [field often shortened] Hill b. June 1904, Spouse=Doroth [field often shortened], died 31 Oct 1976, Age=72, Lane Co., OR per death cert #76-16001. Source: Oregon Death Index 1903-98, www.ancestry.com.
A Dorothy Pie [field often shortened] Hill b. 16 June 1904, Spouse-Eugene, Age=77, died 3 May 1982, Lane Co., Oregon per death cert #82-07883. Source: OR Death Index 1903-98, www.ancestry.com.
You can request a copy of Dorothy's obituary from Debbie at Random Acts Genealogical Kindness, www.raogk.org, read instructions, choose Oregon, choose Lane Co.
You can also find a source of obituaries at an Oregon Library by contacting Oregon Library System, www.oregonlibraries.het/ . Ask them which Library in Lane Co. has obituaries.
After I receive a copy of the obituary which usually lists survivors, I use www.whitepages.com to find current contact info. Successful Searching!