A variant of Lindsay, from a place name meaning 'island of linden trees' or 'Lincoln marsh.'
Lynsey is a variant spelling of Lindsay or Lindsey, a name with deep Scottish and English roots. The toponym originates from Lindsey — a historical region of Lincolnshire in England, itself derived from the Old English elements lind ("linden tree") and ēg ("island" or "low-lying land"). The name transferred first to the Scottish noble family who held the surname de Lindsey, and from there into given name use, particularly in Scotland, where Lindsay became a traditional first name for both boys and girls from the medieval period onward.
Among the many Lindsays in public life, the spelling Lynsey gained particular visibility through Lynsey de Paul, the British singer-songwriter and illustrator who achieved significant chart success in the 1970s and became one of the few women to co-write a UK Eurovision entry. The spelling with a y has a softer, more modern feel that appealed to British and Irish parents from the 1960s through the 1990s, a period during which the name was genuinely fashionable. The variant spellings — Lindsay, Lindsey, Lynsey, Lyndsey — reflect the name's long journey from place to surname to given name, with each generation of parents subtly personalizing the spelling.
Lynsey in particular reads as feminine and specifically British or Irish in flavor, connected to a generation of women who came of age in the 1980s. It has a gentle vintage quality now — familiar but not overused, rooted in real linguistic history rather than invention.