Settle
Old English setlan ‘to seat, place’, from settle2.
wiktionary
From a merger of two verbs:
From Middle English settle, setle, setel, setil, seotel, from Old English setl(“that upon which one sits, a seat, a settle, a place to sit”), from Proto-Germanic *setlaz(“a seat; arm-chair”), representing Proto-Indo-European *sed-lo-, from *sed-(“sit”). Cognate with Dutch zetel, German Sessel, Latin sella.
etymonline
settle (v.)
"come to rest," Old English setlan "cause to sit, place, put," from setl "a seat" (see settle (n.)). Related: Settling. Compare German siedeln "to settle, colonize."
From c. 1300 of birds, etc., "to alight." From early 14c. as "sink down, descend; cave in." Early 15c. in reference to suspended particles in a liquid. Sense of "establish a permanent residence" first recorded 1620s; that of "decide" is 1620s. Meaning "secure title to by deed" is from 1660s.
Meaning "reconcile" (a quarrel, differences, etc.) perhaps is influenced by Middle English sahtlen "to reconcile," from Old English saht "reconciliation," from Old Norse satt "reconciliation." To settle down "become content" is from 1853; transitive sense from 1520s; as what married couples do in establishing domesticity, from 1718. To settle for "content oneself with" is from 1943.
settle (n.)
"long bench," 1550s, from Middle English setle "a seat," from Old English setl "a seat, stall; position, abode; setting of a heavenly body," related to sittan "to sit," from Proto-Germanic *setla- (source also of Middle Low German, Middle Dutch setel, Dutch zetel, German Sessel, Gothic sitls), from PIE *sedla- (source also of Latin sella "seat, chair," Old Church Slavonic sedlo "saddle," Old English sadol "saddle"), from root *sed- (1) "to sit."
