The book "A Century of Coos and Curry" by Emil R. Peterson and Alfred Powers (1952) says on page 575:
"Strang, Robert M., b. Prince Edward Island 1836; to Coos 1868; settled below Cedar Point on the Coquille.Followed farming. Married Evaline Collier.Children: Charles E., Ida J., Hulda A., David H., Frederick, Franklin, Sarah A., George L."
R.M. Strang, age 44, born Prince Edward I., is found in the 1880 census of Coos county in Beaver Slough, with all the children as above except Franklin and George L.
The cemetery listing for the Coquille Pioneer Cemetery (in Coquille on Sixth Street near Birch Street) says: "Strang, David P., Sept. 1, 1834 - Dec. 14, 1923 Co A7th Minn. Inf."