Factual error: Eleanor uses a paisley-shaped mirror. The paisley pattern comes from India and is designed after the mango, therefore unknown in the England of 1138, centuries before the British set foot on the subcontinent. (01:04:40)
Factual error: Eleanor makes a reference to syphilis which was unknown at that time. The disease either originated in the New World and was carried to Europe after Columbus' voyages, or was already in Europe but under a different name. The name "syphilis" was not developed until 1530.
Factual error: After locking his sons in the wine cellar, Henry remarks "The royal boys are aging with the royal port". But "port" refers to a specific type of fortified wine that was not made until about 1670, and it was not given the name "port" until the end of the 17th century.