Shaul Sinwani was the son of David and Miriam.
He joined the Lehi in the Operations Division. He participated in a weapons confiscation operation on December 4th, 1947, in a coffee shop in Rehovot together with the Youth Cell of Rehovot.
He joined the 8th Brigade, 89th Battalion and participated in the battle for Auja al-Hafir.
He received the Lehi badge.
Shaul died on Wednesday April 8th, 2011 and was laid to rest in Kiryat Shaul Cemetery in Tel Aviv.