Todd, I checked my Arthur Jaquish file and found him as the son of Richard Jaquish and Ellen Smith. Arthur has one brother, Louis, and one sister, Jennie. Louis had one daughter, Jessie Mabel, who married Carl Johann Carlson and that family ended up in Spokane and Seattle. Jennie married Dr. John Faucett and they lived in Barron, Jackson Co., Oregon. Jennie died in Ashland, Oregon in 1921. Arthur married Dephline "Della, Lewis in 1893 in Cook Co., Illinois probably in Chicago. In 1900, they are living in Yellowknife, Kankakee, Illinois with two daughters. In 1910, they are living in Ashland, Oregon with four daughters. Arthur died 25 Jan 1918 in Ontario, Oregon. I received an email from a woman there who sent me the date from the records. Their eldest daughter, Verna, married in Ontario, OR in 1916 and they had two children.
Your Sarah A. Jaquish was most likely the daughter of Cornelius Jaquish and Martha Johnson. In the 1870 census, their daughter is listed as Sarah W. Jaquish. She was born about 1849 according to the census. The middle initial is the only thing that is different. Let me know what you think. Jack