Fredel,

When Ernst, Else and Erich arrived in NY in 1937 they were going to Ernst's brother-in-law John SIMON at 352 Central Park West, NYC.

In 1940 in NYC, a John SIMON married Frieda Liebreich (born in Miltenberg.)  I wonder if this could be the John SIMON from the manifest, although this couple married 3 years after the year of the manifest.

Name:	Frieda Liebreich
Gender:	Female
Race:	White
Age:	52
Birth Date:	Sep 1888
Birth Place:	Miltenberg, Germany
Marriage Date:	30 Nov 1940
Marriage Place:	New York, Manhattan, New York, New York, USA
Residence Street Address:	207 E. 95th St.
Occupation:	Housekeeper
Father:	Moses Liebreich
Mother :	Mina Liebreich
Spouse:	John Simon
Certificate Number:	21753
Current Marriage Number:	0
Witness 1:	Josef Chotzen
Witness 2:	Ott Pfaffle

In 1927 and again in 1930, Frieda Liebreich, born circa 1889/1890 in Miltenberg, a milliner / modiste, arrived in NY.  Her father is Moses, living in Elbersfeld.  Frieda is going to her sister, Lina, in Pelham Manor, NY.

When Lina arrived in 1926, she was going to her Aunt Blanche STRASS in Brooklyn.
Lina also left behind her father, M. Liebreich in Elberfeld.

In 1932 a Lina Liefreich married in NYC to Carl STAIB.  In 1940, Lina & CArl STAIB were living at 352 Central Park West, the same address that Ernst LIEBREICH and family were heading to in 1937.

Name:	Lina Liebreich
Gender:	Female
Marriage Date:	18 Apr 1932
Marriage Place:	Manhattan, New York, USA
Spouse:	Carl Staib
Certificate Number:	8478

This should give you more names to search, and possibly find descendants of this family.

Sherri Bobish