Portrait of a man writing with a feather. Mid XVIII century

Portrait of a man writing with a feather.
Mid 18th century. Portrait of an elegantly dressed gentleman writing with a quill pen.
You can see a library with books.
The man wears a precious ring and a wig. It is probably a writer... or a man of letters or a philosopher of the Age of Enlightenment.
In good condition. Re-lined

57 x 70cm