Usual Nickname, Unexpected Name--Molly

Poor Molly. Is she a nickname, or a full given name? I guess the answer is 'both': Molly was originally a regional pronunciation of Mary (that pesky R-to-L shift), but became widespread as a nickname during medieval times.
So, nowadays, she's rather in limbo--too "nickname-y" for a full name, but Mary to Molly isn't really intuitive in Modern English.

• Amalia (ah-MAH-lee-ah, Dutch, German, Italian, Spanish)--form of Amelia
• Amalthea (ah-mahl-THEE-ah, ah-mahl-THEH-ah, [ancient] Greek)--"soothing"
• Magali (mah-gah-LEE, Provençal)--form of Magdalene. Also spelled Magalie. 
• Mahalah (mah-hah-lah, mah-khah-lah [Biblical] Hebrew)--also written as Mahlah (mah-lah, mah-khlah) or Maala (mah-ah-lah).
• Mahalath (mah-hah-lahth, mah-khah-laht, [Biblical] Hebrew)--"lyre"
• Mahalia (mah-HAY-lee-ah, English)--form of Mahalah or Mahalath. 
• Mahulena (mah-hoo-LEH-nah, Czech). Slovak form is Mahuliena (mah-hoo-LYEH-nah).
• Malaika (mah-LYE-kah, Arabic, Swahili)--from Arabic "angels"
• Malati (MAHL-uh-tee, Hindi)--"jasmine"
• Malena (mah-LEH-nah, Czech, Scandinavian, Spanish)--form of Magdalena or Mahulena.
• Malie (mah-lee-eh, Hawaiian)--"calm"
• Malika (mah-LEE-kah, Arabic)--"queen"
• Malina (MAH-lin-ah, mah-LEE-nah, Bulgarian, Czech, Croatian, Polish, Serbian, Slovak)--"raspberry"
• Malini (MAH-lin-ee, Hindi)--"sweet-smelling"
• Marilena (mah-ree-LEH-nah, Italian, Portuguese, Romanian)--contraction of Maria Elena
• Marsaili (MAR-sah-lee, Scottish)--also spelled Marsali
• Maryla (mah-RIL-ah, Polish)--form of Maria

Same Name?!--Madeline

Madeline is an interesting case. Most girls' names are either relatively stable (ex: Elizabeth), out-of-style after reigning for decades (ex: Mary), on-the-comeback/back-in-style (ex: Ava), or new (ex: Kaylee).
Madeline, however, was pretty darned popular through the turn of the century and several decades after, only to take an odd tanking in the 70s & 80s.. It shot right back up less than a decade later, and landed back on top, bringing variants Madeleine & Madelyn along with it.
So, chances are you know a few Madelines. Probably not your own age, but aunts, grandmas, even great-grandmas, as well as some little ones, too.

Original Greek form: Magdalene [Μαγδαληνή] (mag-dah-len-eh)
Latin form: Magdalena (mahg-dah-LEN-ah)
French form: Madeleine (mah-deh-LEHN)


Modern forms:

• Madaléin (MAH-da-layn)--Irish
• Magali (mah-gah-LEE)--Provençal. Also spelled Magalie and Magaly.
• Magdolna (MAHG-dohl-nah)--Hungarian
• Mahulena (mah-hul-EHN-ah)--Czech
• Maialen (mye-ah-len)--Basque
• Malena (mah-LEHN-ah)--Swedish, Spanish
• Malin (MAH-lin)--Scandinavian, Finnish
• Matleena (MAHT-leh-nah)--Finnish