| Czech Republic | Radim |
| Denmark | Ludvig |
| Estonia | Tauno, Tunne |
| Finland | Loviisa |
| Finland-Swedish | Louise, Lova, Lovisa |
| France | Louis |
| Hungary | Lajos, Patricia |
| Latvia | Ivonna, Ludis, Ludvigs, Patrīcija |
| Lithuania | Juozapas, Liucilė, Liudas, Liudvikas, Mangailas, Mangailė, Patricija |
| Norway | Louise, Lovise, Ludvig |
| Poland | Grzegorz, Luiza, Michał, Sieciesław |
| Sweden | Louise, Lovisa |