| Leannan | Casey | |
|---|---|---|
| Meaning | Lover, sweetheart | Vigilant in war |
| Origin | irish | irish |
| Gender | Unisex | Unisex |
| Pronunciation | LAN-awn | KAY-see |
| Syllables | 2 | 2 |
| Trend | — | Steady |
| Decade | Leannan | Casey |
|---|---|---|
| 2020s | 0 | 5,474 |
| 2010s | 0 | 5,582 |
| 2000s | 0 | 12,261 |
| 1990s | 0 | 29,253 |
| 1980s | 0 | 35,968 |
| 1970s | 0 | 18,987 |
| 1960s | 0 | 4,723 |
| 1950s | 0 | 2,656 |
| 1940s | 0 | 571 |
| 1930s | 0 | 277 |
| 1920s | 0 | 347 |
| 1910s | 0 | 444 |
| 1900s | 0 | 89 |
| 1890s | 0 | 37 |
| 1880s | 0 | 6 |
From the Irish and Scottish Gaelic leannan (leannán) 'lover, sweetheart, darling', a diminutive of leann 'affection, love'. Familiar from the folklore figure leannan sidhe, the fairy lover.
From the Irish surname Ó Cathasaigh, whose byname 'cathasach' derives from 'cath' (battle) and is usually glossed 'vigilant, watchful' (in war); a secondary reading is 'noisy'.
Leannan means Lover, sweetheart (irish origin), while Casey means Vigilant in war (irish origin).