Yes, the world was somewhat warmer in those days, before about 1200 ad. An interesting factoid is that the cooling may have been part of the cause of worsening of master/serf relations. In the warmer period most of the community slept in the central structure/donjon/keep. The masters and mistresses had close contact with the people they ruled as they were all in one large sleeping area. With the advent of constant cold weather, walled off rooms and fireplaces became the norm and the rulers were distanced from the ruled. Clothing undoubtedly underwent modifications as well.
Blam: I tried to private message you to thank you for the Humbolt link, but for some reason my computer did not want to send a private message. So thanks.
So it posted here twice, lol. (Looks like an FR problem). You're welcome.
Somewhere around here, in one of my books, I have a picture/drawing of that nursing woman in the canoe approaching Humboldt's sailing ship that is at anchor. She's reaching up either begging or trading something at the side of the ship, bare breasted, with the baby in her arms.