at first he started his career as a normal musician. he married twice: his first wife brought her former husband and her daughter with her. after they had died ronan married laura (sorry it's not very authentic but it's not the real ronan... ).
Then I bought the next update for the game called "megastar". Now Ronan can become a real Star! He's working on it! But he won't have any problems: the people love him. All he needs now are friends!