As per Mark Cilley at The Cilley Pages:

Edward Eugene Proper was born on 10 August 1868 at California. He was the son of Edward Proper and Eunice J. Cilley.1 He died in 1936. He was buried at Noyesburg Cemetery, Sutter, Sutter, California.

Edward Eugene Proper appeared on the 1870 Federal Census of Sutter, Sutter, California, in the household of Edward Proper and Eunice J. Cilley, age 1, born in California.
Edward Eugene Proper appeared on the 1880 Federal Census of Sutter in the household of Edward Proper and Eunice J. Cilley, age 11, born in California, attended school.

What is known as the old Proper ranch, one-half mile south of O'Banion Corners, is the birthplace and the present home of Edward Eugene Proper. His birth occurred on August 10, 1868, a son of Edward and Eunice (Cilley) Proper, natives of Maine, both of Scotch descent. Edward Proper came around the Horn to San Francisco in 1852, and came directly to Sutter County, where he first worked for wages and then went into the sheep business. Later he bought the home ranch at O'Banion Corners. The fine milling wheat commonly known as the 'Proper' wheat was discovered by him in 1868, and was later propagated to fine advantage, proving to be fine milling wheat and making most excellent flour.

The first quarter-section of land that Edward Proper settled on was claimed on a squatter's right; later he acquired more land until he owned 480 acres, on which he erected a house that stood until 1891, when it was replaced by a fine two-story residence, where our subject now makes his home. Two children were born to Edward Proper and his wife, Edward Eugene, of this review, and Philena, Mrs. L. J. Farmer, of Tierra Buena. The father passed away on March 16, 1888.

Edward Eugene Proper received his education at the Gaither district school. From a lad he assisted on the farm, so that when his father passed away he took charge of the home place. On his quarter-section of land he now raises grain and also has an orchard of twelve acres of prunes.

In Yuba City, October 27, 1895, Mr. Proper was united in marriage with Miss Daisy Mae Schmidt, the ceremony being performed by Rev. Buxton. She was born in Marysville and is a daughter of Erich and Josephine Schmidt, who were the parents of five children: Mrs. Josephine Anderson; Mrs. Lillian Redman, deceased; Arthur, of Yuba City; Frances, deceased; and Daisy Mae, Mrs. Proper. Mr. and Mrs. Proper have three girls. Mattie is Mrs. Jesse C. Harris, of Marysville, and they have one son, Allen Edward; Euna Josephine is a graduate of the State Teachers' College at Santa Barbara, where she is now doing graduate work; and Eda Eugenia, also a graduate of the State Teachers' College, is now engaged in teaching school.

Mr. Proper is a Democrat, and has served on the County Central Committee. Fraternally, he is a member of Enterprise Lodge No. 70, F. & A.M., at Yuba City; Washington Chapter No. 13, R.A.M., at Marysville; Marysville Council, R. & S.M; and Marysville Pyramid No. 23, A.E.O. Sciots; and with his wife he belongs to Fidelia Chapter No. 56, O.E.S., Yuba City. Mrs. Proper is also a member of the Bogue Wednesday Club and the Central Gaither Parent-Teachers' Association.1

Citations
1) Peter J. Delay. History of Yuba and Sutter Counties. Los Angeles: Historic Record Company, 1924.
2) Find a Grave. Online http://www.findagrave.com/. Edward Eugene Proper.
3) 1870 Federal Census of Sutter County, California, population schedule. Micropublication M593:92. Washington: National Archives.
4) 1880 Federal Census of Sutter County, California, population schedule. Micropublication T9:84. Washington: National Archives.