Yitzhak Meir Horowitz
M. Chaia Wiener    (Daughter of Moshe Dov & ? Weiner, Died 1943)            
          |
          |--- Morris B. Horowitz (1887-1947)
               M. Bertha Hauser |--- Alvin Jerome Horowitz (1916-1921)
               (1895-1997)      |
                                |
                                |--- Cecille Horowitz (1922-1991)
                                |    M. Philip Sturm   |--- Michael Sturm (1952)
                                |      (1913-1999)          M. Rachel (Patricia) O'Brien (1956)
                                |
                                |--- Harriet Horowitz (1924-1980)
                                     M. Jack Heistein  |--- Martin Heistein (1954)
                                      (1913-1986)      | M. Jeanette Lifschitz |--- Judith Heistein (1984)
                                                       |                       |    M. Daniel Sabba---|
                                                       |                       |                      |--- Charles Isaac Sabba (2013)      
                                                       |                       |                      |      
                                                       |                       |                      |--- Gabriel Eli Sabba (2015)      
                                                       |                       |
                                                       |                       |--- Ari Jacob Heistein (1987)
                                                       |                       |
                                                       |                       |--- Adina Heistein (1994)
                                                       |
                                                       |--- Charles Heistein (1958-1996)