Wikipedia
The Peculiar People were originally an offshoot of the Wesleyan denomination, founded in 1838 in Rochford, Essex, by John Banyard, a farm worker's son born in 1800. They derive their name from an alternate translation of the phrase " Chosen people" taken from the book of Deuteronomy.
The Peculiar People is also a phrase used to describe the Quakers, which they adopted with some pride.
Usage examples of "peculiar people".
How in heaven's name was she ever going to get along with such peculiar people?
Still, I hope one day you'll be able (if you wish) to delve into this intriguing story of the origins of our peculiar people.
We shall see what eyes and ears can do, unaided by mighty magicks, to pick up news, rumours, and hints of peculiar people and sinister doings.