Question: What is the middle name of the filmmaker who made "Olympic Elk"?

Context paragraphs:
Middle name: In several cultures, people's names usually include one or more names in addition to the portion that is usually considered adequate to identify them.  In a number of cultures where a given name is expected to precede the surname, such a name is likely to be placed after the given name and before the surname, and thus called a middle name.  In English-speaking American culture, that term is often applied (arguably mistakenly) to names, occupying that position, even if the bearer would insist that that name is being mistakenly called a "middle name", and is actually (to mention several types of atypical cases):

The Olympic Elk: The Olympic Elk is a 1952 American short documentary film directed by James Algar and produced by Walt Disney as part of the "True-Life Adventures" series of nature documentaries.

Marion Christopher Barry: Marion Christopher Barry was born in June 1980 to Marion Barry and Barry's third wife, Effi Slaughter Barry.  He was their only child.  His father had wanted to name him Marion Barry III, but Effi was strongly opposed, and they decided to give him the middle name Christopher instead.  For most of his adult life, Barry went by his middle name, Christopher.

Latvian name: Latvian names, like in most European cultures, consist of two main elements: the given name ("vārds") followed by family name ("uzvārds").  During the Soviet occupation (1940 - 1991) the practice of giving a middle name was discouraged, but since the restoration of Independence Latvian legislation again allows giving of up to two given names and it has become more common to give a middle name to children.

Walt Disney: Walter Elias Disney ( ; December 5, 1901December 15, 1966) was an American entrepreneur, animator, voice actor and film producer.  A pioneer of the American animation industry, he introduced several developments in the production of cartoons.  As a film producer, Disney holds the record for most Academy Awards earned by an individual, having won 22 Oscars from 59 nominations.  He was presented with two Golden Globe Special Achievement Awards and an Emmy Award, among other honors.  Several of his films are included in the National Film Registry by the Library of Congress.

Roosevelt elk: The Roosevelt elk ("Cervus canadensis roosevelti"), also known as Olympic elk, is the largest of the four surviving subspecies of elk in North America.  They live in the rain forests of the Pacific Northwest and were introduced to Kodiak, Alaska's Afognak and Raspberry Islands in 1928.  The desire to protect the elk was one of the primary forces behind the establishment of the Mount Olympus National Monument (later Olympic National Park) in 1909.

Singh: Singh is a title, middle name or surname, which originated in India.  Derived from the Sanskrit word for lion, it was adopted as a title by certain warrior castes in India.  It was mandated by Guru Gobind Singh for all Sikhs.  It was later adopted by several castes and communities.  As a surname or a middle name, it is now found throughout the Indian subcontinent and among the Indian diaspora, cutting across communities and religious groups, becoming more of a title than a surname.

Chris Funk: Christopher Funk is an American musician and multi-instrumentalist best known as a member of the Portland, Oregon, indie rock band The Decemberists.  He plays guitar, pedal steel, piano, violin, dobro, hurdy-gurdy, mandolin, saxophone, the theremin and many other instruments.  According to Colin Meloy, as stated at the Pilgrimage Festival in Franklin, TN on September 27, 2015, Funk was originally given the middle name "Ryman" but a clerical error on his birth certificate resulted in his middle name being recorded as "Lyman."

Barend: Barend or (somewhat dated spelling) Barent is a Dutch male given name and occasional middle name.  As of 2014, there are over than 4,000 men in the Netherlands with this as their first name, and nearly 3,000 with it as their middle name.  It was likely derived from Bernard.  Notable people with the name include:

Humes Ranch Cabin: The Humes Ranch cabin was built around the year 1900 by William Humes.  William Humes was originally from New York and arrived in the Elwha River area en route to the Klondike.  William, his brother, and a cousin liked the area so much they set up homestead sites.  In the early 1940s, Herb Crisler settled into the cabin at Humes Ranch with his bride, Lois, while they filmed wildlife for what became Walt Disney's "Olympic Elk" film.  Since acquiring the property from Peninsula Plywood, the National Park Service has restored the cabin, conforming to its original appearance and with much of the original materials.  Wood deterioration, however, is occurring, as a result of the moist Olympic Peninsula environment.

Supporting paragraphs: Humes Ranch Cabin Walt Disney
Answer: Elias