Ian Barry (director)
Ian Barry is an Australian director of film and TV.
Peter Levin
Peter Levin is an American director of film, television and theatre.
Lloyd Corrigan
Lloyd Corrigan (October 16, 1900 – November 5, 1969) was an American film and television actor, producer, screenwriter, and director who began working in films in the 1920s.
The son of actress Lillian Elliott, Corrigan directed films,
usually mysteries such as "Daughter of the Dragon" starring Anna May Wong (one of a trilogy of Fu Manchu movies for which he has writing credits), before dedicating himself more to acting in 1938.
His short "La Cucaracha" won an Academy Award in 1935.
Kekuʻiapoiwa II
Kekuʻiapoiwa II was a Hawaiian chiefess and the mother of the king Kamehameha I.
By Your Leave
By Your Leave is a 1934 American domestic comedy film directed by Lloyd Corrigan from a script by Allan Scott, Lewis Foster, and Sam Mintz.
The screenplay was based on a play of the same name by Gladys Hurlbut and Emma B. C. Wells, which had a short run early in the year at the Morosco Theatre.
The film was produced by Pandro S. Berman, and starred Frank Morgan and Genevieve Tobin, although several other actresses were initially scheduled to appear in the film, including Mary Astor and Ann Harding.
Both stars were on loan to RKO from other studios.
It marked the film debuts of two notable Broadway actors, Glenn Anders and Gene Lockhart, the latter of which had a lengthy Hollywood career.
"By Your Leave" opened on November 9, 1934, and received mostly positive reviews.
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.
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.
Minamoto no Chikako
She was the mother of Prince Morinaga.
Dana Blankstein
Dana Blankstein- Cohen( born March 3, 1981) is the director of the Israeli Academy of Film and Television.
She is a film director, and an Israeli culture entrepreneur.
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.

Question: Who is the mother of the director of film By Your Leave?
Answer: Lillian Elliott