My Welsh friend Tudur has a sister named Sian. It's pronounced SHAHN (which equalls SHARN in Australian, so mum2bubba is correct).
I knew a Sian whose name was pronounced SHAWN, but she was born in 1983, looong before the name became popular, so her parents may just have been wrong. I've never heard the database pronunciation at all.
♦ Chrisell ♦
All we have to decide is what to do with the time that is given us. - J.R.R. Tolkien.