In the Elizabethan play The Birth of Merlin, a nobleman at Aurelius Ambrosius’s court.
He betrothed his daughters, Constantia and Modestia, to Cador of Cornwall and Sir Edwin, but they both decided to enter a nunnery instead.
Source
The Birth of Merlin, or the Childe Hath Found His Father | Attributed to William Shakespeare and William Rowley, 1662