Are there any sources either from Wikipedia or outside of Wikipedia that discuss how Lentulus died?

Miscarried = aborted = killed by contraceptives = kids who are now burning in hell because they're not baptized; Theotokos Virgin Mary gave prayer to "Schema-nun Antonia" on how to save these babies (who were aborted, or miscarried, or killed contraceptives) from hell; basically, the prayer asks John the Baptist to baptize them and greatmartyr Barbara to give them body and blood of Jesus; if you pray this prayer diligently every day, then aborted babies are released from hell.

On each painted nail there are forty demons; painted nails = aborted kids in this family; these kids need to be rescued from hell. Contraceptives = abortion; using contraceptives for one year = five aborted kids.

Miscarriages happen because of high heels (as weight pushes down and baby falls out); cesarean happens because of pants as hips are too tight (second generation cesarean will be infertile).

Unbaptized aborted/miscarried/unborn babies burn in hell until Final Judgement; if pregnant, keep the kid and deliver at home because kids are chipped using IVs and vaccines in hospitals. Dentists and doctors chip patients secretly. Ultrasound leads to mark of the beast; don't do ultrasound, please. Abortion leads to breast cancer; a demon is released from hell for each aborted kid.

Aborted kids burn in hell. Stop being selfish. Deliver the kid at home because doctors chip kids in hospitals (usually in the forehead). Ultrasound is evil (baby's DNA is scraped from foot and sent to the BEAST Computer) because it makes the baby demon possessed. Basically, avoid doctors. Deliver at home.

"the boy is suspected to have died young since his grandfather Cicero does not mention him after 45 BC."

Have you considered checking Cicero's works?And why do you care about a boy who died 2,000 years ago, Stevem?

If there's no Wikipedia article you won't spend more than three seconds looking into it anyway. You could read each and every single article that's ever been uploaded to Wikipedia and it wouldn't count for the same as reading ten books. That's why you are constantly asking about these things here. People who read books don't ask such questions. 

"so shall we just shut down yahoo answers then and get a book instead?"

Fortunately it is shutting down – thanks for your efforts to keep it alive.

Update; ok, the Wiki article you cite gives 3 sources (listed as 23, 24, 25) regarding "Lentulus". I assume that there must be some mention in those sources, as lack of mention is not worth citing. You have at least 3 sources outside Wikipedia to refer to.

Start with them

Lentulus was a family name.Like Smith, there were a lot of them.Don't confuse either Publius Cornelius Lentulus (Sura, or Spinther) for "Publius Lentulus", the purported author of the forgery, "Letter of Lentulus".Neither was Governor of Jerusalem.

I just Googled "how Lentulus died" and at least one page came up (I saw the word strangulation). But, I know you have the internet ... help yourself.

The other anon DID answer the q. Perhaps you worded it incorrectly. We're not mind readers and I caution you to watch your tongue.

I expect Wiki uses the Encyclopaedia Britannica, as they do for most things.