important centers of Jewish life in Belarus were at first mere villages. Hrodna, one of the oldest, was first mentioned in the chronicles of 1128. Navahrudak was founded somewhat later by Yaroslav I the Wise; Kerlov in 1250; Voruta and Twiremet in 1252; Eiragola in 1262; Halshany and Kowno in 1280; Lida,