Who created portrait in which the artist appears two roles?

You're likely thinking of Jan van Eyck's "The Arnolfini Portrait", also known as "The Arnolfini Wedding".

Here's why:

* Two Roles: The artist, Jan van Eyck, appears in the painting not only as the painter but also as a witness to the wedding ceremony. He's depicted in the mirror on the back wall, with his signature and the date "1434".

* Complex Symbolism: The painting is full of symbolism, and Van Eyck's inclusion adds to the layers of meaning.

While there are other portraits where artists include themselves in their work, "The Arnolfini Portrait" is one of the most famous and intriguing examples.