no they
were not brother and sister in real life
Patrick Laborteaux, brother of Matthew Laborteaux who played Albert Ingalls.
Jeb, Jason's brother on "Little House on the Prairie," was played by actor Johnnie Whitaker. He appeared in the episode titled "The Brothers" during the series' sixth season. Johnnie Whitaker is also known for his role as Will in the television series "Family Affair."
I couldn't find an info about Allison Angrim's real life siblings. But the actor that played her TV brother Willie was the real life brother of Melissa Gilbert (Laura aka Half Pint).
There was no Linda on Little House on the Prairie.
Jonny Cash
Penelope Parker was played by Stacey Sipes .
Patrick Laborteaux, brother of Matthew Laborteaux who played Albert Ingalls.
Dan McBride has: Played 1st Man in "Little House on the Prairie" in 1974. Played Mr. Reilly in "Little House on the Prairie" in 1974. Played Bixler in "Little House on the Prairie" in 1974. Played Mr. Taylor in "Little House on the Prairie" in 1974. Played Customer in "Little House on the Prairie" in 1974. Played Stranger in "Little House on the Prairie" in 1974. Played Henry in "Little House on the Prairie" in 1974. Played Bobby Joe in "Killing Stone" in 1978. Performed in "Young Maverick" in 1979. Played Raymond in "Flo" in 1980. Played Private in "Loose Shoes" in 1980. Played Cashier in "Highway to Heaven" in 1984.
Jeb, Jason's brother on "Little House on the Prairie," was played by actor Johnnie Whitaker. He appeared in the episode titled "The Brothers" during the series' sixth season. Johnnie Whitaker is also known for his role as Will in the television series "Family Affair."
Carl Pitti has: Played Ranch Hand in "Of Mice and Men" in 1939. Played Whip Expert in "The Kissing Bandit" in 1948. Played Townsman in "Stars in My Crown" in 1950. Played McWilliams, Outlaw Guarding Montalvo Estate in "The Bandit Queen" in 1950. Played Outrider in "Westward the Women" in 1951. Played Sheriff Conlon in "The Lawless Breed" in 1953. Played Bourreau, Hangman in "Woman They Almost Lynched" in 1953. Played Gambler in "Gunsmoke" in 1955. Played Marauder in "The Marauders" in 1955. Played Indian in "Many Rivers to Cross" in 1955. Played Tom in "Tribute to a Bad Man" in 1956. Played Earl Held in "The Fastest Gun Alive" in 1956. Played Joel in "Gun Glory" in 1957. Played David in "Bonanza" in 1959. Played George Spencer in "Bonanza" in 1959. Played Guard in "The Man from U.N.C.L.E." in 1964. Played Phillips in "The Hallelujah Trail" in 1965. Played Bull Whip Specialist in "Justine" in 1969. Played Teamster in "High Plains Drifter" in 1973. Played Driver in "Little House on the Prairie" in 1974. Played Man in "Little House on the Prairie" in 1974. Played Townsman in "Little House on the Prairie" in 1974. Played 1st Townsman in "Little House on the Prairie" in 1974. Played Customer in "Little House on the Prairie" in 1974. Played Deputy Hill in "Little House on the Prairie" in 1974. Played Dance Caller in "Little House on the Prairie" in 1974. Played Wagon Driver in "Little House on the Prairie" in 1974. Played Stage Driver in "Little House on the Prairie" in 1974. Played Carl in "Little House on the Prairie" in 1974. Played Len in "Little House on the Prairie" in 1974. Played Silas in "Little House on the Prairie" in 1974. Played Lash Latham in "Highway to Heaven" in 1984.
I couldn't find an info about Allison Angrim's real life siblings. But the actor that played her TV brother Willie was the real life brother of Melissa Gilbert (Laura aka Half Pint).
Kay Howell has: Played Mrs. Parker in "Little House on the Prairie" in 1974. Played Elizabeth Smith in "Little House on the Prairie" in 1974. Played Secretary in "Little House on the Prairie" in 1974. Played Nurse in "CHiPs" in 1977. Played Board member in "Dallas" in 1978. Played Jean Clemens in "Mark Twain: Beneath the Laughter" in 1979.
There was no Linda on Little House on the Prairie.
Jonny Cash
No, Willie Olsen, played by Jonathan Gilbert, was not Melissa Gilbert's brother in real life. In the TV series "Little House on the Prairie," Willie is the younger brother of Laura Ingalls' best friend, Nancy. Melissa Gilbert portrayed Laura Ingalls, while Jonathan Gilbert is her adoptive brother in the show, not in reality.
Pa was played by Michael Landon.
Almanzo James Wilder was played by Dean Butler .