JANE WYATT
Her best known role was as the wise and nominally pretty stay-at-home Mom in the 50's TV show, Father Knows Best, which is still kicking around on TV Land and its brethren. After this long-running success, Jane Wyatt’s work was mostly in TV. And yet, before Robert Young and the tube, she had an interesting career on the silver screen. Ms. Wyatt left this vale of tears  at the grand old age of 96. 
Lost Horizon (1937) is an absolute masterpiece and still very much worth seeing. Based on James Hilton’s captivating novel, it is the story of a place (discovered quite by accident) that is for all intents and purposes, perfect. Directed by the iconic Frank Capra, it features Ronald Colman as well as Ms. Wyatt in a fairy tale about the possibility of perfection. 
Gentleman’s Agreement (1947) is more than 60 years old, but is still a classic. Gregory Peck pretends to be Jewish to find out what it’s really like. He does. We do. Ms. Wyatt adds a nice note of stability as his lady friend. Ok, it’s a little dated, but aren’t we all?
Boomerang! (1947) is a good courtroom drama with a crime-fighting, straight-arrow District Attorney (Dana Andrews) who is the only one to question the guilt of a convenient suspect nabbed right after the crime. Ms. Wyatt is the supportive love interest in a fine film directed by Elia Kazan and based on a true story. Not to be confused with a really awful film of the same name with Eddie Murphy, released in 1992.
Ms. Wyatt is just fine as Aggie Hunter in None But The Lonely Heart (1944) written and directed by Clifford Odets. Pretty close to soap opera territory, but still a nice turn for those involved. You can’t go wrong with Cary Grant and Ethel Barrymore along. 
One of Ms. Wyatt’s last feature film ventures was in the still-charming Never Too Late (1965) with Paul Ford and Maureen O’Sullivan as surprised middle-aged parents in waiting, and Ms. Wyatt as Grace Kimbrough, friend of the astonished family. 
Ms. Wyatt is good in the pivotal role of Estella in the 1934 version of Great Expectations. But, in all honesty, this one pales compared to the 1946 classic directed by David Lean (though it is better than the weird 1998 one with Ethan Hawke).  
All of the movies in this article are fine for children of all ages (boredom factor noted). All are available on DVD.