Laura Ingalls Wilder was distantly related to both Theodore Rosevelt and Franklin Delano Roosevelt. Reportedly she hated FDR.
Nels - make her a WIDOW!
The series often preached "acceptance" and "integration" of the downtrodden and of those who are marginally different than the rest (such as the dwarf, the wild boy etc.) yet those characters who---invariably---would be accepted in the Walnut Grove community, would subsequently never be heard of again, for the rest of the series, as if they'd never existed, let alone moved to Walnut Grove. In a way, this defeated the whole "social tolerance" progressive theme of the series.