Almanzo says to Laura, "My brother Royal is coming for a visit, I haven't seen him in 10 years!"
Less than 10 years ago, Royal came to visit with his wife and 2 sons, and Laura had met him.
The opening scene of the little house is missing Bandit's doghouse in the yard.
Royal comes to live in Walnut Grove and dies not long after. This year would be 1887/1888; in reality, Royal Wilder died in 1925.
This episode (which takes place in 1887) has Pa Ingalls moving to Burr Oak, Iowa to work in a men's store. In reality, the Ingalls family moved to Burr Oak in 1876/77 where Pa managed a hotel. In 1887 they lived in DeSmet, Dakota Territory.
Royal tells Almanzo that he and Laura would be the only family that Jenny would have. In real life, Royal's parents and all 5 siblings were still alive at his time.
In real life, royal was only about 10 years older than Almanzo. As played by nicholas, he appears old enough to be Almanzo' s father. Almanzo was 27/28 when he married Laura, putting royal at 37/38. Nicholas Pryor was 47 and looked it.
Mrs. Oleson proposed a column titled "Hurricane Harriet's Happenings". Yet, hurricanes were not named until the 1950's.
Laura has long painted and manicured fingernails. Those are not the hands of a farmer's wife, and the first nail polish did not exist until 1922.
The printed wrapping paper on Charles' going away present did not exist until 1917.
To the right of the door of the schoolhouse is a poisonous pink oleander bush. They do not grow in Minnesota.
It's an insult to say that the Ingalls sold the farm and left. Caroline got 50% profits from the diner, Charles ran the sawmill and a freight company. Must have had something to do with Landon's divorce.
Also, Royal comes with his daughter, but in an earlier episode ("The Nephews"), he had two sons and no mention of a daughter. And in this episode, there is no mention of him having sons.
In this episode (dated around 1886), Royal has one daughter, Jenny, and no spouse. In real life, Royal Gould Wilder had a wife Electa (m. 1893), daughter Bernice (1894-1957), an unnamed, stillborn daughter (1897), and daughter Susie (1898-1899).
When Laura is introducing Ms. Plum as the new school teacher, Ms. Plum calls for "Willie and Nellie" to step forward when in fact it should have been Nancy, not Nellie.