stir thorgrimson set on fiercely with steinthor his kinsman , and his first hap was that he slew a man of the fo1k of snorri the priest , his son-in-law ; but when snorri saw that he cried to stir : thus , forsooth , thou avengest thorod , the son of thy daughter , whom steinthor of ere has brought unto death ; the greatest of dastards art thou .