| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 241 | Lausanne | ArthurianLegend | Lake Geneva. | F | |
| 242 | Leodegan | ArthurianLegend | Father of Guinevere. | M | |
| 243 | Leodegraunce | ArthurianLegend | Father of Guinevere. | M | |
| 244 | Lidoine | ArthurianLegend | Daughter of Cavalon. | F | |
| 245 | Lionel | ArthurianLegend | Cousin of Lancelot. | M | |
| 246 | Llacheu | ArthurianLegend | Arthur's son. | M | |
| 247 | Llamrei | ArthurianLegend | Arthur's horse. | F | |
| 248 | Lludd | ArthurianLegend | Name of a king. | M | |
| 249 | Loe | ArthurianLegend | Father of Erec. | M | |
| 250 | Lohengrin | ArthurianLegend | Son of Percival. | M | |
| 251 | Lohoot | ArthurianLegend | Son of Arthur. | M | |
| 252 | Lot | ArthurianLegend | Name of a king. | M | |
| 253 | Lucan | ArthurianLegend | Brother of Arthur. | M | |
| 254 | Lueius | ArthurianLegend | A Roman emperor. | M | |
| 255 | Luned | ArthurianLegend | Servant of Laudine. | F | |
| 256 | Lunet | ArthurianLegend | Servant of Laudine. | F | |
| 257 | Lunete | ArthurianLegend | Servant of Laudine. | F | |
| 258 | Lynelle | ArthurianLegend | Variant of Lynette, who accompanied Sir Gareth on a knightly quest. | F | |
| 259 | Lynessa | ArthurianLegend | Variant of ancient Welsh given name. In Arthurian legend Lynette accompanied Sir Gareth on a knightly quest. | F | |
| 260 | Lynet | ArthurianLegend | Sister of Lyonors. | F | |