[Casiopea]

Originally Posted by threesailers

It is spelled Cylee. It is pronounced as kI-lee.

If it's pronounced [kaj]-lee ([kaj] in kite), then "C" is a Latinized version of the Autralian Aborigine word kylie (Quite an interesting etymology!) ; Cf. Kim, Kym, Cym, all pronounced [kIm] ([I] in sit).

kylie : Boomerang. A Western Australian word. It occurs in all the languages from New Norcia down to the south-west corner of the continent including the Perth area. Spelling such as kylie, kylee and kiley occur suggesting a pronunciation kaili.
SOURCE

Note that,

• The letter <k> wasn't in the Roman's alphabet.
• Romans wrote the sound [k] as <c>.
• The letter <c> wasn't in the Greek's alphabet.
• Greek scribes changed Roman <c> to Greek <k>.
• Roman scribes changed Greek <k> to Roman <c>.

No wonder the Anglo-Saxons used both <k> and <c> to represent the sound [k]. We're still doing it today;e.g., Kathy, Cathy; Kris, Chris, to name but a few of many. Transliteration. That's the reason, and that's all the proof you need.

By the way, Greek Kyros comes from the word kyra, a Persian name:

Kyra, a Persian name meaning "light" or "sun".
Kyros, Greek version, a male Greek name meaning "Lord".
Cyrus, Latinization of Greek Kyros; K => C
Ciara, Anglicization; K => C

In Middle English, <c> was written before vowels <e>, <i>, <y>, and <k> was written elsewhere. That's why it's rather difficult if not near impossible to find a word in modern English that's spelled <cy> and pronounced [k]y word-initially (e.g., there's [s]yber, [s]yst; [k]yle, etc.). Your daughter's name Cylee doesn't fit that pattern. It's not an Anglicized version. If it were, you'd be calling her [s]ylee or [ch]ylee.

In short, the fact that ' "Cyrus" was originally pronounced "ki" (long i) ' does not support that 'Cylee could easily have the "ki" pronunciation.' The reason being, Cylee is not related to Greek, Latin, or an obscure Persian word. It's Australian Aborigine with a Latinized twist.

All the best.