MABEL (f.) - English form of AMABEL (q.v.), thus Melwe
MADISON (m. & f.) - 'son of Maud/Matilda'; -ion "son of", so Tuohtion (see MATHILDA)
MADONNA (f.) - Italian 'my lady' (cf. DONNA); herinya "my lady", thus Herinya itself or Herinye; or maybe Ninyaheri (ninya - independent word for "my, mine") for keeping the sequence
MAGDALENE, MEDELAINE (f.) - 'of Magdala'; there is no better way than to adopt 'Magdala' to Quenya: mahtala (which means "wielding a weapon" in Quenya, by the way), so Mahtalie or Mahtaliel (= "daughter of Magdala")
MAGNUS (m.) - Latin 'great'; alta "great, large", thus Alton or Alto
MAIDIE (f.) - 'little maiden'; *vendince "little maiden" (vende (earlier wende) + dim. ending -ince), thus Vendince itself
MALACHI (m.) - Heb. 'my messenger'; *norindo "courier, runner, messanger", ninya, -inya "my" Ninyanorindo or Norindonya
MALCOLM (m.) - Gaelic 'servant of Columb' while 'Columb' means 'dove'; cu, cua "dove"; -ndur "servant of", thus Cundur or Cuandur
MALLORY (f.) - French 'unhappy, unlucky'; *úalassea "unjoyful" (probably might be contracted to *úlassea, but then it would also mean 'unleaved'), thus Úalassie (or Úlassie alternatively)
MANDEEP (m.) - said to mean "mind-light" in Punjabi; óre "mind", cala "light", so Órecalo
MANFRED (m.) - probably Old Ger. 'man + peace'; nér "man"; sére "peace", thus Nesséro (= nerséro - rs assimilates to ss)
MANON (f.) - from MARIE (q.v.), so Sére; or Sanskrit 'man'; nér "man", so Nér as such
MANUEL (m.) - from EMMANUEL (q.v.), so Eruyome or Eruasemmo
MANUELA (f.) - feminine of MANUEL (q.v.)
MARA (f.) - Heb. 'bitter'; sára "bitter", thus Sára itself (to keep similarity) or Sáre with a fem. ending
MARCEL, MARCELLUS (m.) - diminutive of MARK (q.v.), thus maybe Carnillo
MARCELLA (f.) - feminine form of MARCEL (q.v.), thus maybe Carnille
MARK, MARCUS (m.) - probably connected with 'Mars'; Carnil "Mars", thus could be Carnildo or Carnilmo or others; someone suggested also Marcarnildo
MARGARET, MARGARITA (f.) - from Greek 'pearl'; marilla "pearl" (from QL, maybe invalid!), thus Marille
MARIANNE (f.) - may be a combination of MARIA (q.v.) and ANNE (see ANNA), so Almaresáre or Almiesáre; another possibility is that it is a variant of MARION (q.v.), so Sárelle or Sárince
MARINA (f.) - from Latin 'of the sea'; *earin, *earina "of the sea", thus Earina itself (similar sound) or Earine
MARION (f.) - diminutive form MARY; -ince, -lle diminutive endings, so Sárince or Sárelle
MARISA (f.) - Latin 'of the sea'; see MARINA
MARTHA (f.) - Aramaic 'lady'; heri "lady", thus Heri itself
MARTIN (m.) - Latin 'of Mars'; [?] *carnilin(a) "of Mars", thus maybe Carnilino
MARTINA (f.) - feminine form of MARTIN (q.v), thus Carmiline
MARSHALL (m.) - Ger. 'horse + servant'; rocco "horse"; -ndur "servant of", thus Roccondur
MARY, MARIA - perhaps Heb. 'bitterness'; sára "bitter", so Sáre or Sárie; I was suggested that Marie may also mean "frieng" (from Gaelic) which would be Nilde and Mellon in Sindarin
MATILDA (f.) - from Ger. 'might/strength + battle'; tuo "[physical] strength"; ohta "war", thus Tuohte
MATTHEW (m.) - Heb. 'gift of God'; Eru "God"; anna "gift", thus Eruanno or Erunno
MAXIMILIAN (m.) - Latin 'greatest'; *analta "greatest", thus Analto or Analton
MAY (f.) - lótesse, so Lótesse as such
MEGAN (f.) - perhaps Gaelic 'strong'; polda "strong", so Polde or it is from MARGARET (q.v.)
MELANIE (f.) - from Greek 'black, dark'; more, morna, morqua "black, dark", thus More itself or Morne or Mornie or Morque, etc.
MELISSA (f.) - Greek 'a bee'; nion, nier "honey-bee", thus Nione or Niere
MELODY (f.) - 'melody'; lin "melody", thus Lin itself or Linde
MEREDITH (f.) - Welsh 'sea-guardian'; ear, vea "sea", tirme "she-guardian", so Eartirme or Veantirme
MEREL (f.) - Dutch 'blackbird'; there is no word for "blackbird", Moraiwe would be an anglicism
MERRY (m.) - 'merry'; *alassea "joyful", thus Alasseo
MIA (f.) - Italian 'mine'; ninya "my, mine", so Ninya as such
MICHAEL (m.) - Manveru, see NWHAGEN
MICHAL (m. & f.) - Heb. 'brook'; nelle "brook", so masc. Nello and fem. Nelle
MICHELLE (f.) - feminine form of MICHAEL (q.v.), thus Manveri
MIDHAT (m.) - said to be Arabic 'the praised one'; *laitaina "praised", so perhaps Laitaino
MILAN (f.) - Czech 'gracious'; eruanna "grace", so perhaps Eruannon
MILDRED (f.) - Old Eng. 'mild/gentle + strength'; moica "gentle, soft"; tuo "physical strength", thus Moicatue
MILENA (f.) - feminine form of MILAN, so perhaps Eruannalle
MILLICENT (f.) - Old Ger. 'labor + strong'; móta- "labor"; tulca "strong", thus Mótatulce or contr. Mótulce
MINERVA - Latin 'thought, intellect' (being more or less a Roman equivalent of Greek ATHENA of unknown origin); intya "knowledge", so perhaps Intyalle
MINNA (f.) - German 'love'; melme, so Melme as such
MIRANDA (f.) - Latin 'admirable, wonderful'; írima "desirable", so Írima
MONICA (f.) - Greek 'alone'; eresse "alone", so Eresse itself or Eressie
MORGAN (m. and f.) - from Old Welsh 'sea circle'; ear "sea", rinde "circle", so masc. Earrindo, fem. Earrinde
MURIEL (f.) - possibly Gaelic 'sea + bright'; ear "sea"; calima "bright", thus Earcalime
MURRAY (m.) - perhaps Scottish 'of the sea'; ear "sea", so Earon
<get out get outta here enough already>