Eddie Romero
Edgar Sinco Romero( July 7, 1924 – May 28, 2013) was a Filipino film director, film producer and screenwriter.
Matt Corboy
Matt Corboy( born June 4, 1973) is an American actor.
He has appeared in both films and television series.
Kamakalawa
Kamakalawa is a 1981 Filipino fantasy film written, produced and directed by Eddie Romero and starred Christopher De Leon, Tetchie Agbayani and Chat Silayan.
The film explores the folklore of prehistoric Philippines.
The film is the last entry in Eddie Romero's epic historical film trilogy after Ganito Kami Noon, Paano Kayo Ngayon?
and Aguila, respectively.
I. V. Sasi
Irruppam Veedu Sasidaran( 28 March 1948 – 24 October 2017), better known as I. V. Sasi, was an Indian film director who made over 150 films in various Indian languages.
He is well known for his work in Malayalam cinema of the 1970s, 1980s and 1990s, although he directed a few Tamil and Hindi films as well.
In 2015, he was awarded the J. C. Daniel Award, the highest award in Malayalam cinema.
John Jaffer Janardhanan
John Jaffer Janardhanan is a 1982 Malayalam movie directed by I. V. Sasi, written by T. Damodaran, starring Ratheesh, Ravindran and Mammootty.
It is a remake of the 1977 Hindi movie" Amar Akbar Anthony".
Sudhinam
Sudhinam is a 1994 Malayalam film written by Babu Janardhanan and directed by Nissar.
John Mahendran
John Mahendran is an Indian film director and screenwriter who has worked on Tamil and Telugu and language films.
John is the son of noted Tamil film maker J. Mahendran.
Njan Ninne Premikkunnu
Njan Ninne Premikkunnu is a 1975 Indian Malayalam- language film, directed by K. S. Gopalakrishnan.
The film stars Kamal Haasan, Sudheer, Girija, Janardhanan and Murali Sr. The film has musical score by M. S. Baburaj.
Immini Nalloraal
Immini Nalloraal is a 2005 Malayalam film directed by Rajasenan.
This film stars Jayasurya, Navya Nair, Janardhanan and Bindu Panicker.
Mimics Super 1000
Mimics Super 1000 is a 1996 Indian Malayalam film directed by Balu Kiriyath and starring Jagadish, Janardhanan and Anusha in the lead roles.

Question: Do both films John Jaffer Janardhanan and Kamakalawa have the directors that share the same nationality?
Answer: no