Sisto

It comes form the latin name “Sixtus” which means sixth. Italians adopted the name as “Sixto” then changed it to “Sisto”

Other counterparts of this name are “Sixto, Seisto, Cesto, and Xisto”

Pronounced as (See Stowe)

“This is my sixth child, I don’t know what to name him!”
“Name him Sisto for sixth”
“Good idea!”