Why the names Lillith and Maris on Frasier?

No, Maris has never been directly seen on Frasier.

Frasier actually got married twice. His ex wives were Nanny G and Lillith. He was engaged to Diane but she left him at the altar.

Frasier - 1993 Maris Returns 11-7 is rated/received certificates of: Canada:PG (video rating)

Frasier - 1993 Murder Most Maris 11-8 is rated/received certificates of: Canada:PG (video rating)

Frasier - 1993 The Last Time I Saw Maris 3-8 was released on: USA: 28 November 1995

Frasier - 1993 The Last Time I Saw Maris 3-8 is rated/received certificates of: Canada:PG (video rating)

Because the creators of the show said that it would be impossible to cast an actress with all the physical attributes of Maris.

Frasier - 1993 Murder Most Maris 11-8 was released on: USA: 11 November 2003 Germany: 14 September 2004

Niles was married to Maris and Mel.

Nobody did! Maris is never actually seen on the show, not even once. She never appears onscreen, and her absence is a running joke with many of the show's fans.

MarissyMaryMarisRisaArisaIsaArisMaris-piss

Niles was first married to Maris, then later towards the end of the series he married Daphne Moon.

Niles' wife is called Maris. but later in the series He marries Dr. Mel Karnoski, and finally Daphne Moon

Their names are Frasier Robinson III & Marian [Shields] Robinson.

Maris is also Maris in the Romanian language.

Maris Crane, Niles Crane's wife, fled to an island owned by her family to avoid being prosecuted for the the murder of her Argentinian ex-boyfried.

Frasier Robinson III & Marian [Shields] Robinson

Maris Trant's birth name is Maris Tant.

Susan, Roger Jr., Kevin, Richard, Randy, and Sandra

Faye, Hazel, Heloise, Kinley, Lillith, Mildred, Norma, Payton, Raven, Rhoslyn, Stanburh, Tenanye, Velma, Wesley, Zenith

Lilly and Lucy are female pet names. Other female pet names include Lacie and Logan.

Fred, Fabio, Fenn, Fran, Frasier

Maris Liepa's birth name is Maris Rudolph Eduardovich Liepa.

Lillith is not in the Bible. According to the mystic Jewish teachings of the Kaballah, Lillith was the first wife of Adam who rebelkled against being Adam's help, and decided she wanted Adam to cater to her. When God disapproved, she rejected God and became the mother of all the demons. It is a false belief system.

Adam's first wife who refused to be with him.