I saw your question in trying to find my father´s uncle Karl Kristian Eliassen (born in Onsøy, Fredrikstad on the 4 th of August 1887) who emigrated to Australia.(I did not find him). Amanda Gustavsen is buried together with her husband Karl Gustavsen on the churchyard of Gressvik by Fredrikstad (Field 13, row 14 grave nr. 011 + 012 for Karl). There were no dates indicated, but if you like, I can try to find the graves for you, if you have not already found out. I am often in Gressvik as I am born there and we have a second house there. My mail-adress is:
bjelland@hotmail.com. Best wishes, Reidun Bjelland