The story
- EnglishMersey
- Proto-Indo-European*seh₁-
- Proto-Germanic*sīdaz
- Proto-Germanic*sīdǭ
- Old Englishsīde
- Middle Englishside
- Englishside
- English todayMerseyside
First known use, by meaning
- from 1974 A metropolitan county in northwestern England bordering Greater Manchester, Lancashire and Cheshire.
Etymology from Wiktionary, CC BY-SA 4.0.