A Morris Slaten (known as "Coots") was b ca 1906 and died in 1959. His obit says his wife was Wanda, and he has a son Joey and a brother Hoyt. He lived in Albertville, Marshall co AL. Wanda as a Dalrymple.
Also, a Morris Slaten was b ca 1904 SC, lived in Oglethorpe GA with father Charles P.(1910 ed 137)
Don't know if either is your man, but they bear looking into. Stowaway stories are generally just stories.