I missed this. Yes, WM is a stand alone, but if you read The Falcons of Montabard you will recognize some characters from the latter half of TWM, and Sabin in Falcons was a tiny baby at the end of TWM. It's been a few years though, so EC is free to correct me if I've got it wrong
Both books stand alone IMO.
Yes, The Winter Mantle is a stand alone but very, very, loosely linked to The Winter Mantle. A character who was a tiny baby as Misfit says in TWM, has his adult story told in The Falcons of Montabard. He's mostly imaginary too, although the historical facts surrounding him are all true. It was a chance remark in a chronicle about an illegitimate son of Simon de Senlis about whom nothing else is known, that led me to create his son Sabin. So although the novels are linked, the way I've written it, that link is tenuous.
Les proz e les vassals
Souvent entre piez de chevals
Kar ja li coard nI chasront
'The Brave and the valiant
Are always to be found between the hooves of horses
For never will cowards fall down there.'
Histoire de Guillaume le Mareschal