<Li> Dr. Marvin `` Leo '' Markus , portrayed by actor and singer Harry Connick , Jr. , is a Jewish doctor and Grace 's husband from the fifth season . Leo meets Grace Adler in Central Park while she is on her way to be artificially inseminated with gay best friend Will 's baby . After Will finds out that Leo and Grace are dating , they have their biggest fight of the entire series , in which Will tells Grace to move out . Thanks to Jack and Karen 's meddling , they forgive each other and Will accepts Grace 's relationship . In November , 2002 , Grace and Leo are married at a spontaneous group ceremony in Central Park , which was supposed to be broadcast on The Today Show . It was later revealed in the storyline that the ceremony was not legal , but the two officially marry at a ceremony soon after . Leo and Grace 's relationship was a constant source of tension between Will and Grace , although they eventually achieved a certain accord with each other - Leo even commenting to Will at one point that he considered himself essentially married to both of them due to his ability to accept their close relationship . Leo 's true first name is Marvin , as revealed by his mother at their wedding reception . According to The Nation Magazine , this was the first time in television history that a Jewish protagonist character had married inside the faith . Grace immediately realizes she does not know as much about Leo as she expected . Their marriage fails after less than two years , when Leo reveals that he had a one - night stand while working in Cambodia for Doctors Without Borders . Leo admits his affair to Will first . Will then refuses to help Leo break the news to Grace . After Leo comes clean about his affair , Grace briefly considers continuing their marriage , but quickly decides she wants a divorce . Leo reappears during season eight , a little over a year after the divorce in the storyline , in the episode `` Love Is in the Airplane . '' In the episode , he and Grace have a sexual encounter on an airplane after coincidentally ending up on the same flight to London , though Leo was to continue to Thailand . The result is Grace 's pregnancy , as discovered in the season eight episode `` The Definition of Marriage '' . A couple of months later Grace meets Leo , with the intention of telling him that she is pregnant with his baby , but he informs her that he is engaged to another woman , Kate . Consequently , Grace decides not to tell Leo about the pregnancy . In the series finale ( May 2006 ) Leo tells a heavily pregnant Grace that he loves her . Leo has a job as a hospital researcher in Rome , Italy , and this is where Grace gives birth . After one year in Rome , Leo and Grace move back to Brooklyn , New York , where they raise their daughter , Laila , together . </Li>
<Li> Dr. Marvin `` Leo '' Markus , portrayed by actor and singer Harry Connick , Jr. , is a Jewish doctor and Grace 's husband from the fifth season . Leo meets Grace Adler in Central Park while she is on her way to be artificially inseminated with gay best friend Will 's baby . After Will finds out that Leo and Grace are dating , they have their biggest fight of the entire series , in which Will tells Grace to move out . Thanks to Jack and Karen 's meddling , they forgive each other and Will accepts Grace 's relationship . In November , 2002 , Grace and Leo are married at a spontaneous group ceremony in Central Park , which was supposed to be broadcast on The Today Show . It was later revealed in the storyline that the ceremony was not legal , but the two officially marry at a ceremony soon after . Leo and Grace 's relationship was a constant source of tension between Will and Grace , although they eventually achieved a certain accord with each other - Leo even commenting to Will at one point that he considered himself essentially married to both of them due to his ability to accept their close relationship . Leo 's true first name is Marvin , as revealed by his mother at their wedding reception . According to The Nation Magazine , this was the first time in television history that a Jewish protagonist character had married inside the faith . Grace immediately realizes she does not know as much about Leo as she expected . Their marriage fails after less than two years , when Leo reveals that he had a one - night stand while working in Cambodia for Doctors Without Borders . Leo admits his affair to Will first . Will then refuses to help Leo break the news to Grace . After Leo comes clean about his affair , Grace briefly considers continuing their marriage , but quickly decides she wants a divorce . Leo reappears during season eight , a little over a year after the divorce in the storyline , in the episode `` Love Is in the Airplane . '' In the episode , he and Grace have a sexual encounter on an airplane after coincidentally ending up on the same flight to London , though Leo was to continue to Thailand . The result is Grace 's pregnancy , as discovered in the season eight episode `` The Definition of Marriage '' . A couple of months later Grace meets Leo , with the intention of telling him that she is pregnant with his baby , but he informs her that he is engaged to another woman , Kate . Consequently , Grace decides not to tell Leo about the pregnancy . In the series finale ( May 2006 ) Leo tells a heavily pregnant Grace that he loves her . Leo has a job as a hospital researcher in Rome , Italy , and this is where Grace gives birth . After one year in Rome , Leo and Grace move back to Brooklyn , New York , where they raise their daughter , Laila , together . </Li>
who played grace husband on will and grace
who played grace husband on will and grace
Harry Connick , Jr.
Harry Connick , Jr.