Isannah

Origin: English

Meaning: the closest I could find regarding the name’s etymology is that it most likely a smooh of the names Isabel or Isabella (meaning “my God is abundance” or “my God is oath”) and Susannah (which means “lily”, “rose” and “lotus”).

Interesting fact: I first came across this name in history, being the name of one of the daughters of Paul Revere.

Ida

Origin: Germanic, Greek, Old Norse, Irish, Hindu, Japanese

Meaning: a multicultural name with many meanings, Ida is from the Germanic element id meaning “work, labor”.

It’s also a Greek feminine name, the name of a mountain on the island of Crete, the birthplace of the Greek god Zeus, as well as being the name of the nymph who nursed him as a baby, along with another nymph, Adrasteia. The Greek meaning is unknown though I have seen it possibly coming from Greek idê and ida meaning “woodland”.

I’ve also seen Ida listed as being a variant of Iðunn, an Old Norse goddess from Old Norse  (again) and unna (to love).

It also seems to be an Anglicization of Irish Íde possibly meaning “thirst”.

Ida is also a name found in Hindu myth, a variant of Ila, a god or goddess who seemed to change gender frequently.

Ida is also a Japanese surname though I couldn’t find any meaning on it.

Isadora

Origin: Greek

Meaning: gift of Isis

Isadora Quagmire is a friend the Baudelaires’ meet in the fifth book (The Austere Academy) along with her brother Duncan. An aspiring poet, she and her brother are kidnapped by Count Olaf and the Baudelaires’ spend the next few books trying to rescue them.

Interesting fact: Isadora and Duncan were named after Isadora Duncan, an American dancer who had a fondness for long scarves- it ended up being her demise when a scarf she was wearing ended up caught in the open-spoked wheel of a moving car, breaking her neck.

Ishmael

Origin: Hebrew

Meaning: “God has heard” or “God will hear”

Ishmael is a character in the last book in A Series of Unfortunate Events (The End), a character who lives on the Island the Baudelaires and Count Olaf end up at, and is a stickler for customs and traditions on the Island.

Ishamel is also a character in Moby Dick and Daniel Quinn’s Ishmael.

Variants: Isma’il (Arabic), Ismael, Ismail

Iris

Origin: Greek

Meaning: rainbow ( Ιρις )

In Greek mythology, Iris is the goddess of the rainbow and the messanger of the gods.

Iris is also the name of a genus of flowers as well as being a color referring to shades ranging from blue-violet to violet.

Iris is also a term used to describe the colored portion of the eye, responsible for controlling the diameter and size of the pupil and the amount of light reaching the retina

Ilya, Ilia

Origin: Russian, Bulgarian, Georgian

Илья (Russian)

ილია (Georgian)

Илия (Bulgarian)

Meaning: Ilya is the Russian form of Elijah meaning “My God is Yahweh”.

Ilia is also a variant transcription of Ilya, but it’s also the Georgian form of Elijah or also a variant transcription of Bulgarian Iliya (also the Bulgarian form of Elijah)

Ilyusha and Ilyushenka are diminutive forms of Ilya

Ivan

Origin: Russian, Bulgarian, Ukrainian, Serbian, Croatian, Czech, Slovene, Macedonian, English

Meaning: Slavic form of John, meaning “Yahweh is gracious”

Although in English, Ivan is always pronounced as “eye-ven”, in Russian and Ukrainian it’s pronounced as “ee-vahn”