All Mine To Give (1957) Glynis Johns, Cameron Mitchell, Rex Thompson

Based on a true story set in the 1850s, Scottish immigrants move to the American Midwest, where they live happily and run a successful business -- until the untimely deaths of both the father and the mother. Now orphaned, the six kids must fend for themselves. Robbie, the oldest, does his best to care for his siblings while he searches for foster parents kind enough to accept such a large family into their home.