Question: Did both Pekka Karjalainen and John Ince work as a film director?

Context paragraphs:
Pekka Karjalainen: Pekka Karjalainen is a Finnish film director and sound producer.

Her Maternal Right: Her Maternal Right is lost American silent film directed by John Ince and Robert Thornby and stars Kitty Gordon.  World Film Corporation distributed.

Old Lady 31: Old Lady 31 is a 1920 American silent comedy drama film produced and distributed by Metro Pictures and directed by John Ince.  It is based on a novel by Louise Forsslund that was turned into a play by Rachel Crothers.  The film starred actress Emma Dunn reprising her 1916 stage success for the screen.  The film was remade in 1940 as "The Captain Is a Lady".

If Marriage Fails: If Marriage Fails is a lost 1925 film directed by John Ince and written by C. Gardner Sullivan.  In the film, a young woman (played by Belle Bennett is married to a wealthy man (played by Clive Brook.  The young woman has an affair with another man but becomes jealous when her husband befriends a fortune teller (played by Jacqueline Logan).  The marriage ends in divorce, and the wealthy man marries the fortune teller.

John Ince (actor): John Ince, also known as John E. Ince, (August 29, 1878 – April 10, 1947) was an American stage and motion pictures actor, a film director, and the eldest brother of Thomas H. Ince and Ralph Ince.

Held In Trust: Held In Trust is a lost 1920 American silent romance film directed by John Ince and produced and distributed by Metro Pictures.  The film stars May Allison.

The Crucial Test: The Crucial Test is a lost 1916 silent film drama directed by John Ince and Robert Thornby.  It stars Kitty Gordon and was distributed by World Film Corporation.

Ralph Ince: Ralph Ince (January 16, 1887 – April 10, 1937) was an American pioneer film actor, director and screenwriter whose career began near the dawn of the silent film era.  Ralph Ince was the brother of John Ince and Thomas H. Ince.

The Planter: The Planter is a lost 1917 silent film drama directed by Thomas N. Heffron and John Ince.  It was produced by F. N. Manson and Harry Drum and distributed through Mutual.

A Favor to a Friend: A Favor To A Friend is a lost 1919 silent film comedy produced and distributed by Metro Pictures and directed by John Ince.  The film starred Emmy Wehlen.

Supporting paragraphs: Pekka Karjalainen John Ince (actor)
Answer: yes