Dating to the early 1900s, the grounds were originally owned by Frances Bond, an investment banker, and were known as Willowbrook Farm.

When birdwatcher and author Ian Fleming needed a name for his famous protagonist he turned to a notable bird-watching guide written by Bond.

Gwynedd Mercy is a member of the National Collegiate Athletic Association and Atlantic East Conference (AEC) with 19 sports teams that compete at NCAA Division III level.

Fulfilling its mission to raise a child's awareness of his/her surrounding natural environment, the Hobbit House opens all field trips and special occasions to Gwynedd-Mercy students and parents who wish to attend.

As of October 19, 2012, the Valie Genuardi Hobbit House was licensed by the Pennsylvania State Board of Private Academic Schools.

A comprehensive, pre-college preparatory program designed to aid high school students interested in higher education, Gwynedd-Mercy offers eligible, Diocesan-city-schooled participants a five-week, summer residential stay on-campus.

Program offerings include academic instruction in mathematics, science and English; tutorial and counseling services; PSAT/SAT workshops; financial aid information; visits to colleges; and cultural and social activities.