::::: You're right, the issue of his sexuality or sexual orientation doesn't have to be proven or verified in order to be mentioned.  Which naturally brings up the next question, "Why (should) it be mentioned?".  Bruno's life is most appropriately defined by his ideas not his personal preferences.  Why don't we put in a section about his favorite food and color while we're at it? How about a secret rendezvous he had with an English monk named Adam when he was in London?  Just kidding. )  Don't you see how valueless and how digressive speculation can really be?  Here are my personal opinions:  I truly feel "the issue" detracts from some of the more important facts and purposes of his life's biography.  It is as if an an entire biographical article of absolute conviction and bold and immense biographical details is slowed down or even reduced into petty slander and misdirected, valueless speculation.  I always look at historical figures with a balanced perspective.  Consider this - I have read time and time again that if you want to know the truth about someone, you seek out their peers and contemporaries.  The people who surrounded a man or woman while they actually "lived" are the greatest and most valued sources for gaining the most accurate knowledge of someone or something.  The same is often said concerning Translations of works from different languages.  Literary Critics and even many Authors have observed that while modern translations of great works are generally more accurate in a linguistic sense, they often include language, diction and vocabulary that did not exist during the authorship of the original work. Too many liberties are often taken by modern translators.  Additionally, the older translations and especially the ones written contemporaneously while the original author was still alive, capture the feel and the essence of the era and time period like no other translation ever can.  None of Bruno's "contemporaries" ever wrote about, or spoke about anything involving his sexuality.  Remember, this was no quite man!  He openly cursed, condemned, slandered and verbally attacked everyone, wherever he went.  I find it difficult that there is no record of anyone, anywhere mentioning a close relationship or some type specialized tutoring of young adolescents etc.  I will give you more examples.  Look up Benvenuto Cellini.  This man was equally as bold of a figure as Bruno, he was italian, an artist and this man was a known homosexual who had numerous affairs with young boys and young men.  Now, lets move on to minor figures of the Renaissance.  Look up Benedetto Varchi, he was an Italian poet, who although not as famed as Bruno, was immediately known and understood by his contemporaries as a homosexual.  So, the truth is, when some famed author or figure traveled from University to University during the Renaissance, surrounded by young boys, young men, middle aged men, old men, there is not one account or accusation from his contemporaries?  Not even some minor association with an apprentice or student?  WOW!  Now, let's think!  If someone was a homosexual, people found out.  If someone such as Bruno, who was hated by everyone wherever he went, and ran into conflict wherever he went, if this type of man wasn't accused by his contemporaries and peers, then who would? If this type of man messed around with some young boys or young men whose fathers or local leaders would sell him out to the authorities or the church in a heart beat.   
 The entire personal life section should be taken off.  Allow Bruno's ideas to stand at the forefront of his biography!  It's his ideas that he died for!