From Middle English drihte, from Old English driht, dryht (“a multitude, an army, company, body of retainers, nation, a people, men”), from Proto-Germanic *druhtiz (“troop, following”), from Proto-Indo-European *dhereugh-, *dher- (“to hold, hold fast, support”). Cognate with North Frisian dregte (“people, crowd, escort, retinue, host”), Middle Low German drucht (“band, war-team”), Middle High German truht (“multitude, offspring”), Icelandic drótt (“people, entourage, bodyguard”), Gothic [script?] (gadrauhts, “soldier”).
From Middle English dright, driȝt, earlier drihten, from Old English dryhten (“a ruler, king, lord, prince, the supreme ruler, the Lord, God, Christ”), from Proto-Germanic *druhtinaz (“leader, chief, lord”), from Proto-Indo-European *dhereugh-, *dher- (“to hold, hold fast, support”). Cognate with Scots drichtin, drichtine (“lord, the Lord”), Old Frisian drochten (“lord”), Old Saxon drohtin (“lord”), Middle High German truhten, trohten (“ruler, lord”), Danish drot (“king”), Swedish drotten, drott (“king, ruler, sovereign”), Icelandic drottinn (“lord, master, ruler, God”). Related also to Old English dryht (“a multitude, an army, company, body of retainers, nation, a people, men”), Old English ġedryht (“fortune, fate”), Old English drēogan (“to serve in the military, endure”). More at dree.