White's Directory of 1856 states :-
"CHRIST'S HOSPITAL, or BLUE COAT SCHOOL, was founded in the year 1602, by Richard Smith, M.D., who bequeathed the manor, and certain lands, at Potter Hanworth, for the erection and endowment of a school, for the maintenance and education of twelve poor boys.
But, the estates having increased considerably in value, since that time, and the charity being augmented by a number of munificent bequests, the governors in 1815, were enabled to increase the number of scholars to fifty, and they have since been augmented by five or ten at a time, till they now amount to 124, who are lodged, maintained, clothed, and educated till they arrive at the age or fourteen or fifteen years, when each is apprenticed, with a premium of £16.
They are admitted between the ages of seven and eight; and are selected from the poorest and most deserving natives of Lincoln, Potter Hanworth, and Welton.
They were formerly dressed like the boys of Christ's Hospital in London, but they now wear more modern clothing.
They are now taught music as well as reading, writing, and arithmetic"
DB 14 February 2019