| Name | Meaning | Origin |
|---|
| Cillian | War; strife. | Irish Baby Names |
| Gillian | Child of the gods. A feminine form of Julian, meaning Jove's child. | English Baby Names, Latin Baby Names, American Baby Names |
| Gillian | A Scottish Gaelic name meaning St. John's servant. | Gaelic Baby Names |
| Illian | Youth. | Latin Baby Names |
| Illias | Jehovah is God. | Hebrew Baby Names |
| Jillian | Youthful. Jove's child. | English Baby Names, Latin Baby Names, American Baby Names |
| Jilliane | Jove's child.from the masculine Julian. | English Baby Names |
| Killian | Blind. | Celtic Baby Names, Irish Baby Names, Latin Baby Names |
| Lillian | Lily (after the flower). Pure. | English Baby Names, Latin Baby Names, American Baby Names |
| Lilliane | derived from the flower name Lily. Symbol of innocence; purity; beauty. | Latin Baby Names |
| Lilliane | derived from the flower name Lily. Symbol of innocence; purity; beauty. | Latin Baby Names |
| Lillias | Lily (after the flower). Pure. | Latin Baby Names |
| Rillia | Brook. | German Baby Names |
| Uilleam | Helmeted. | Gaelic Baby Names |
| Uilliam | Resolute defender. | Teutonic Baby Names |
| Willa | Resolute. | Anglo-Saxon Baby Names, English Baby Names, Teutonic Baby Names, American Baby Names |
| Willa | Resolute. | English Baby Names |
| Willem | Strong helmet. | Dutch Baby Names, German Baby Names, Teutonic Baby Names |
| William | Determined protector. | English Baby Names, French Baby Names |
| Williamon | | German Baby Names |