Question: What was Michael Landon's character called in the Little House on the Prairie?

Context paragraphs:
The Loneliest Runner: The Loneliest Runner is an autobiographical made-for-television film written, and directed by "Bonanza" star Michael Landon.  It first aired on December 20, 1976 on NBC and starred Lance Kerwin, Brian Keith, DeAnn Mears, and Landon's "Little House on the Prairie" daughter, Melissa Sue Anderson.  The film was nominated for two Emmys.

Charles Ingalls: Charles Phillip Ingalls ( ; January 10, 1836June 8, 1902) was the father of Laura Ingalls Wilder, known for her "Little House" series of books.  Ingalls is depicted as the character "Pa" in the books and the television series.

Karen Grassle: Karen Trust Grassle (born February 25, 1942) is an American actress, known for her role as Caroline Ingalls, the wife of Michael Landon's character and the mother of Melissa Gilbert's character, in the NBC television drama series "Little House on the Prairie".

Highway to Heaven: Highway to Heaven is an American television drama series which ran on NBC from 1984 to 1989.  The series aired for five seasons, running a total of 111 episodes.  It was shot almost entirely in California.  The series starred Michael Landon as Jonathan Smith, and Victor French—Landon's co-star from "Little House on the Prairie"—as Mark Gordon.

Little House on the Prairie (TV series): Little House on the Prairie (known as Little House: A New Beginning in its final season) is an American western drama television series, starring Michael Landon, Melissa Gilbert, and Karen Grassle, about a family living on a farm in Walnut Grove, Minnesota, in the 1870s and 1880s.  The show is an adaptation of Laura Ingalls Wilder's best-selling series of "Little House" books.  Television producer and NBC executive Ed Friendly became aware of the story in the early 1970s.  He asked Michael Landon to direct the pilot movie.  Landon agreed on the condition that he could also play Charles Ingalls.

Michael Landon, the Father I Knew: Michael Landon, the Father I Knew is an American made-for-television biographical drama film directed by Michael Landon Jr. documenting his privileged, but often troubled, childhood as the son of beloved television actor, writer and director, Michael Landon.  The film stars John Schneider as Michael Landon, Cheryl Ladd as his second wife Lynn Noe Landon, and Joel Berti, Trever O'Brien and Shawn Pyfrom sharing the role of their eldest son, Michael Landon Jr. throughout his childhood years.  The film originally premiered on CBS on May 23, 1999.

Michael Landon: Michael Landon (born Eugene Maurice Orowitz; October 31, 1936 – July 1, 1991) was an American actor, writer, director, and producer.  He is known for his roles as Little Joe Cartwright in "Bonanza" (1959–73), Charles Ingalls in "Little House on the Prairie" (1974–83), and Jonathan Smith in "Highway to Heaven" (1984–89).  Landon appeared on the cover of "TV Guide" 22 times, second only to Lucille Ball.

Mark Landon: Mark Landon (October 1, 1948 – May 11, 2009) was an American actor and adopted son of "Bonanza" and "Little House on the Prairie" star Michael Landon.

Katy Kurtzman: Katy Kurtzman (born September 16, 1965, Washington, D.C.) is an American actress.  She began her career as a child actress.  In 1977, Michael Landon cast Katy as stuttering Anna who was abused by Nellie on "Little House on the Prairie".  Katy also starred in the "Little House on the Prairie" fourth season episode "I Remember, I Remember" with Matthew Laborteaux, playing young Caroline and young Charles, respectively.  This episode aired on January 23, 1978 and is Production # 4016.

Leslie Landon: Leslie Landon Matthews (née Landon; born October 11, 1962) is a former American actress.  She is known for playing the role of Etta Plum on the "Little House on the Prairie" TV series, and for being the daughter of Michael Landon.  Matthews is now a clinical psychologist.

Supporting paragraphs: Little House on the Prairie (TV series) Charles Ingalls
Answer: Pa