Soon Forgotten was created in 1996.
The Forgotten Enemy was created in 1949.
Someday Soon - Ian Tyson song - was created in 1991.
I would tell you, but if I remembered, they wouldn't be forgotten anymore, and your question would be impossible to answer.
The cast of The Forgotten Genocide - 1975 includes: Mike Connors as Narrator
his handkerchief
"Soon, you will have forgotten him" and "You will soon have forgotten him" are both grammatically correct; however, while the first sounds better, neither sounds very natural. A better phrasing, if it fits the context, would be "You will soon forget him." Alternatively, you could keep the motherly tone by saying "Soon enough, you will have forgotten (all) about him," or a variation of the like.
Not Forgotten - TV - was created in 2005.
Weaver of Forgotten was created in 2010.
Not Forgotten Association was created in 1919.
Forgotten Anthology was created in 1995.
Forgotten Prophecies was created in 2007.
The Forgotten Planet was created in 1954.
Forgotten Worlds was created in 1988.
Forgotten Tomb was created in 1999.
The Forgotten Daughter was created in 1933.
Forgotten Rebels was created in 1977.
The Forgotten Enemy was created in 1949.