<P> Grace has a string of boyfriends throughout the series , many played by guest stars such as Woody Harrelson and Gregory Hines . Grace marries the Jewish doctor Leo Markus , played by Harry Connick , Jr. , on November 21 , 2002 , but the marriage ends when he has a one - night stand with a doctor from the Red Cross while working in Cambodia with Doctors Without Borders . In season 8 , the two reunite briefly during a flight to London when they coincidentally met on the plane . Their mile high tryst leads to Grace getting pregnant , but she does n't tell Leo because he is engaged to another woman . However , in the series finale , she and Leo remarry and raise the baby , a girl named Laila , together . Laila is born in Rome , where Leo is working at a hospital as a researcher . After one year in Rome the family moves back to New York , to their apartment in Brooklyn . Laila goes on to attend college and there meets Will and Vince 's son , Ben . Laila and Ben are living in dorm rooms opposite each other 's while at college ; the same scenario that Will and Grace found themselves in while they attended college . Ben and Laila marry soon afterward . </P>
<P> Grace has a string of boyfriends throughout the series , many played by guest stars such as Woody Harrelson and Gregory Hines . Grace marries the Jewish doctor Leo Markus , played by Harry Connick , Jr. , on November 21 , 2002 , but the marriage ends when he has a one - night stand with a doctor from the Red Cross while working in Cambodia with Doctors Without Borders . In season 8 , the two reunite briefly during a flight to London when they coincidentally met on the plane . Their mile high tryst leads to Grace getting pregnant , but she does n't tell Leo because he is engaged to another woman . However , in the series finale , she and Leo remarry and raise the baby , a girl named Laila , together . Laila is born in Rome , where Leo is working at a hospital as a researcher . After one year in Rome the family moves back to New York , to their apartment in Brooklyn . Laila goes on to attend college and there meets Will and Vince 's son , Ben . Laila and Ben are living in dorm rooms opposite each other 's while at college ; the same scenario that Will and Grace found themselves in while they attended college . Ben and Laila marry soon afterward . </P>
who is graces baby daddy on will and grace
who is graces baby daddy on will and grace
Leo Markus
Leo Markus