Mid-winter

According to the Old English Dictionary:

mid-winter

Add :-- Eallum ǽhtemannum gebyreð midwintres feorm, Ll. Th. I. 436, 33. Se kyng wæs þone midwintres dæig on Eoferwíc, Chr. 1069; P. 204, 27. Se kyng wæs þone midwinter on Westmynstre, 1076; P. 212, 23. mid-winter