Acc to researcher Joe Slaten, this man is a descendant of George Washington Slaten of Monroe co TN.
Father of Hawthorne (called Slats) was John Winslow Slaten, who left an autobiography,published in the 1940s in Walla Walla WA. I have most of it in photocopy form, from Joe. He was a Nazarene minister at the time of his death.
As far as I can tell, Steve Slaten, is a son of Arvid and has been a radio personality in Seattle. The spelling of the name may be anybody's guess among these families: Slaten, Slaton, Slatton, Slayton.
He is at email@example.com, and I am at firstname.lastname@example.org.