Which of one these was a ruler of the early 1500s and the last patron of leonardo da vinci?

The name of that person is Francis I
Francis I was the king of French that reigned in the period of 1515 until his Death. He first heard of Da Vinci when he gained his fame in Italy and started to fell in love ever since he first laid eyes on them.
It is believed that Francis I appointed Da Vinci in the design of many of the French Monumental constructions such as Chateau Chambord,