Who IS Dimitrij Uljanow?

The name popped up while I was going over the web search, and I tried to set his identity, after a few hours of web and book digging I only could establish that he was Lenin's 4 years younger brother, and that he was a Political activist, as well as a field medic during World war I.
After that I started wondering about Lenin's whole family, I started digging again, he had a Older Brother - Alexander Uljanow, who was in a Communist-terrorist organisation "narodnaya vola" its thanks to him Lenin became a Bolshevik activist, Either than that he had 3 sisters the names I couldn't identify.

Question at hand is, dose anyone know anything more about Dimitrij? Becous form what I know Lenin's sisters weren't active enough to designated there names in history, so finding anything about them would be extremely hard.

Cyprian Uljanow wrote:

"Narodnaya Vola"

Cool, they killed 1, almost 2 evil Tsars.

nice post count "404"

I found out also Piulsudzski's older brotehr wa sin Narodnaya Vola, Jozef Puilsudzki played a major role in bringing Poland back on the world map.

Quote :

Alexander Uljanow, who was in a Communist-terrorist organisation "narodnaya vola" its thanks to him Lenin became a Bolshevik activist

In a manner of speaking, he got hanged when trying to smuggle a bomb in a hallowed out book and Lenin decided to become a Marxist revolutionary rather than a terrorist("Our path will be a different path").

Cyprian Uljanow wrote:

nice post count "404"

I found out also Piulsudzski's older brotehr wa sin Narodnaya Vola, Jozef Puilsudzki played a major role in bringing Poland back on the world map.

Thanks, and interesting.