What is the tenth letter in Jacob Sartorius' name?

Explanation

Jacob is regarded as a Patriarch of the Israelites. He has later named Israel. According to the Book of Genesis, Jacob was the third Hebrew progenitor with whom God made a covenant. He was the son of Isaac and Rebecca. There are 270.000 people in the U.S. with the first name Jacob. Names similar to Jacob: Jake, Jay and the variant Jakob.