Susan B. Nelson
Susan B. Nelson( April 13, 1927 – May 4, 2003) was an American environmental activist who is best known as the mother of the Santa Monica Mountains National Recreation Area.
Maria Magdalena Keverich
Maria Magdalena Keverich( 19 December 1746 – 17 July 1787) was the mother of the composer Ludwig van Beethoven.
Alonso Mudarra
Alonso Mudarra( c. 1510 – April 1, 1580) was a Spanish composer of the Renaissance, and also played the vihuela, a guitar- shaped string instrument.
He was an innovative composer of instrumental music as well as songs, and was the composer of the earliest surviving music for the guitar.
The Art Teacher
"The Art Teacher" is a song written and performed by American-Canadian singer-songwriter Rufus Wainwright.
It originally appeared on his extended play (EP), "Waiting for a Want", released by DreamWorks Records in June 2004 as a preview of his fourth studio album, "Want Two", which was released by Geffen Records in November 2004.
The lyrics in the piano ballad describe a middle-aged woman's recollection of an unrequited love for her teacher.
The song explores gender and sexuality, and its music has been compared to work by Philip Glass.
"The Art Teacher" has received a generally positive reception, and appears on other releases in Wainwright's discography, including "Live at the Fillmore", a concert film accompanying "Want Two".
The song also appears on , a greatest hits album, and the live album , both of which were released in 2014.
Trinidad Tecson
Trinidad Perez Tecson (November 18, 1848 – January 28, 1928), known as the "Mother of Biak-na-Bato" and "Mother of Mercy", fought to gain Philippines independence.
She was given the title "Mother of Biak-na-Bato" by Gen. Emilio Aguinaldo.
She was also cited as the "Mother of the Philippine National Red Cross" for her service to her fellow Katipuneros.
Minamoto no Chikako
She was the mother of Prince Morinaga.
Kekuʻiapoiwa II
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Pydimarri Venkata Subba Rao
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Fatima bint Mubarak Al Ketbi
Fatima bint Mubarak Al Ketbi is the third wife of Sheikh Zayed bin Sultan Al Nahyan, the founder and inaugural president of United Arab Emirates, and late emir( ruler) of Abu Dhabi.
She is referred to as the mother of sheikhs and as the Mother of the UAE.
Rufus Wainwright
Rufus McGarrigle Wainwright (born July 22, 1973) is an American-Canadian singer, songwriter, and composer.
He has recorded seven albums of original music and numerous tracks on compilations and film soundtracks.
He has also written a classical opera and set Shakespeare sonnets to music for a theater piece by Robert Wilson.
Wainwright's self-titled debut album was released through DreamWorks Records in May 1998.
His second album, "Poses", was released in June 2001.
Wainwright's third and fourth studio albums, "Want One" (2003) and "Want Two" (2004), were repackaged as the double album "Want" in 2005.
In 2007, Wainwright released his fifth studio album "Release the Stars" and his first live album "Rufus Does Judy at Carnegie Hall".
His second live album "Milwaukee at Last!!!" was released in 2009, followed by the studio albums  (2010) and
"Out of the Game" (2012).
The double album "Prima Donna" (2015), was a recording of his opera of the same name.
His ninth studio album  (2016), featured nine adaptions of Shakespeare's sonnets.
Wainwright is the son of musicians Loudon Wainwright III and Kate McGarrigle, and the older brother of singer Martha Wainwright.

Question: Who is the mother of the composer of song The Art Teacher?
Answer: Kate McGarrigle