This information just came to me this past week.It came out of "Linn County, Oregon Pioneers who Settled on Donation Land Claims" by John Miles & Richard R. Milligan.
It says that Louisa Elizabeth Moore married Henry T. Propst, 5 Sep 1880 in Linn Co.It has "MB - E" after the marriage information (which I took to mean Marriage Book E).
She was born 4 Mar 1860 in Linn Co., and other than that, I don't know any more about her.I have a picture of her as a child, and then I have a picture of a young woman and young man.I believe it is Louisa, and the young man could be a brother; they look somewhat alike.This picture was taken by "Thos. Magee, Wilbur, Wash."
So, I am "fishing" around for clues, since it is all new information to me.