Etymograph > Indo-European > Proto-West Germanic > Dictionary > *rīkisōn

to rule, reign

Source: https://en.wiktionary.org/wiki/Reconstruction:Proto-West_Germanic/rikison#Proto-West_Germanic
Words originating from this one
OE ricsian "have power" (rīkisōn > rīkisān > rīċisān > rīcsān > rīcsan) through pwgmc-to-oe