Portuguese term
United States
BA in Transl., MA in ESL, 15 yrs of exp.
Native in: Portuguese 
Works in: English to Portuguese, Portuguese to English, Spanish to Portuguese, and 2 more.
amor sem brilho
"Amo-te, ó rude e doloroso idioma,
Em que da voz materna ouvi: 'meu filho!',
E em que Camões chorou, no exílio amargo,
O gênio sem ventura e o amor sem brilho!"
PS: I'm not looking for copies of previous translations, as I intend to create something original, yet not departing too much from the source-text. The translation is finished, I only need to polish it up.
Proposed translations
Portuguese to English, English to Portug
Native in: English 
Works in: Portuguese to English, English to Portuguese
Brazil
Technical - Fast - good price - accurate
Native in: English (Variant: US) , Portuguese (Variant: Brazilian)
Works in: English to Portuguese, Portuguese to English, English, and 1 more.
uninspired love
Belize
Near Native Proficiency in Source langua
Native in: English
Works in: Portuguese to English, Dutch to English, French to English
love without a spark/sparkle
United Kingdom
WorldWideWords
Native in: English (Variant: UK)
Works in: French to English, Spanish to English, Portuguese to English
love without passion
Genius without happiness, love without passion.
One definition of 'ventura' is happiness according to Infopédia.
| agree |
Nick Taylor
4 hrs
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Thanks, Nick.
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| agree |
Richard Purdom
: yup, you need 'with' for this to resonate
7 hrs
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Thanks, Richard.
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United States
Laudable Lady Linguist
Native in: English
Works in: Spanish to English, French to English, English to Spanish, and 3 more.
Discussion
"Em 1569 [Camões] regressa a Lisboa graças aos seus amigos que lhe pagaram a viagem. Só três anos mais tarde é que faz a primeira publicação do famoso livro. Os últimos anos de Camões foram amargurados, tendo o poeta morrido moribundo e esquecido pelo mundo. Um fidalgo letrado seu amigo mandou inscrever-lhe na campa rasa um epitáfio significativo: 'Aqui jaz Luís de Camões, príncipe dos poetas do seu tempo. Viveu pobre e miseravelmente, e assim morreu', no dia 10 de Junho de 1580 – data que hoje se comemora como o Dia de Camões, de Portugal e das Comunidades Portuguesas. "
Initially, I thought of "luster" as a possible translation for "brilho", but I dropped it in favor of "glory", which I believe to be a stronger & more appropriate word:
glory: praise; magnificence; something marked by beauty or resplendence; a height of prosperity or achievement (M. Webster)
Love in Camoens: https://pt.wikipedia.org/wiki/Luís_de_Camões##O_amor_e_a_mul...
In which I heard my mother’s voice: "meu filho!”,*
In which Camoens wept, in his bitter exile,
The genius without fortune, love without glory!"
* Portuguese for "my son".
From A Whisper in the Wind: Selected Poems in Translation, by Oliver Simões