Portrait painting by Francis Clouet, LeadArt oil painting just do reproduction of them in museum quality on linen canvas:

Francis Clouet (c. 1510 – 22 December 1572), son of Jean Clouet, was a French Renaissance miniaturist and painter, particularly known for his detailed portraits of the French ruling family.
His work is remarkable for the elaborate finish of all the details, the extreme accuracy of the drawing, and the exquisite completeness of the whole portrait. He must have been a man of high intelligence, and of great penetration, intensely interested in his work, and with considerable ability to represent the character of his sitter in his portraits. His coloring is perhaps not specially remarkable, nor from the point of style can his pictures be considered very fairly beautiful, but in perfection of drawing he has hardly any equal.