Etymon
gem-arijaz-protowest-germanic-ari-protowest-germanic-laid-protowest-germanic-ari-protowest-germanic-laidijari-old-english-ldere-middle-english-leder-english-leader-inherited-from-middle-english-leder
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.