Around 16 Jan 1362 St Marcellus' Flood was an intense extratropical cyclone, coinciding with a new moon, which swept across the British Isles, the Netherlands, northern Germany, and Denmark causing at least 25,000 deaths. In England the town of Dunwich, Suffolk was destroyed.

Pepy's Diary. 14 Aug 1662. Up early and to look on my works, and find my house to go on apace. So to my office to prepare business, and then we met and sat till noon, and then Commissioner Pett (age 52) and I being invited, went by Sir John Winter's (age 62) coach sent for us, to the Mitre [Map], in Fenchurch street, to a venison-pasty; where I found him a very worthy man; and good discourse. Most of which was concerning the Forest of Dean, and the timber there, and iron-workes with their great antiquity, and the vast heaps of cinders which they find, and are now of great value, being necessary for the making of iron at this day; and without which they cannot work: with the age of many trees there left at a great fall in Edward the Third's time, by the name of forbid-trees¹, which at this day are called vorbid trees.

Note 1. TT. Possibly forbidden trees. Trees that were felled in a great storm of 1362 which miners were forbidden from taking.