Mendelson's son Harry and his descendants reverted to the original family surname of Morein, though other family members continued to use Mendelson. Harry Morein was a founder of the Young Israel of Newark, and an early advocate He served as Chazzan of Montreal's
Congregation Shaar Hashomayim from 1938 to 1973. Nathan's son, David Mendelson, continued as an assistant cantor at the synagogue for many years. Two grandchildren, brothers
Jacob "Jackie" Mendelson and Solomon, or Sol, "Tucky" Mendelson have been presidents of the Cantors Assembly. Sol served in 1987-1989, while Jackie served in 2003-2004. Sol had multiple additional roles in the organization, including Programming Chair, Journal Editorial Board member, journal article author. He led many events on behalf of the Assembly, including: • 1983: recruitment seminar at
University of Hartford Hartt School of Music • 1987: annual convention • 1996: annual convention • 1992: lay meeting • 1984-1988: committee membership on the approach to
Hazanut • 1989: joint project with
National Coalition Supporting Soviet Jewry •
First Gulf War: Israeli support trips (together with brother Jackie), and organization of the trips • Shoah remembrance project In addition to Rabbi Mendelson's descendants, several other close relatives by marriage had significant impact on the Newark
kehila, mostly originating with his support. • Louis Skui (later Sky) was Mendelson's brother-in-law and chief
shochet of Newark. Upon Mendelson's death, due to the previous dispute with Rabbi Konvitz, Sky was unable to work as a
shochet. He opened Sky Hebrew Books (later SkyBook), a large supplier of books and
etrogs to congregations across the United States for over 50 years. • Joseph Gross was president of Mendelson's Bergen Street Shul, administrator of the Mendelson-lead Vaad Hakashruth, and later
mechutan to the Mendelsons, after the marriage of children Samuel Gross and Leesa Mendelson. In turn, Samuel was later a president of the shul, in the 1940s and 1950s. ==Communal advocacy and disputes==