I have just caught up with this thread - I did a bit of digging on Cyril Holland a few years ago (and was very grateful for some help from Dick Flory!) The CWGC database seemed fine then. I did find the following:
While attending the military preparatory school Radley, Cyril found his niche. In addition to serving as prefect, he was an outstanding athlete, winning awards for his rowing, track, and swimming prowess. In 1903, he entered the Royal Military Academy at Woolwich where he also excelled in rowing and track. Joining the Army immediately after leaving Woolwich, he was stationed with the Royal Field Artillery regiment in India. A solitary figure, Cyril traveled when on leave, visiting architectural monuments and art galleries, which his fellow officers found strange.
At the beginning of World War I, he desperately wanted to go into battle, though his regiment had orders to remain in India. Sacrificing nine years of seniority, he transferred to the Meerut division, a calvary regiment destined for France. Unbeknownst to either brother, Vyvyan and Cyril were stationed three miles away from one another.
On 9 May 1915, during the second battle of Neuve Chapelle, Cyril Holland was killed in a duel with a German sniper, dying with glory as he would have wished. In a letter written to Vyvyan in June 1914, Cyril explained his life's mission:
I became obsessed with the idea that I must retrieve what had been lost. By 1900, it had become my settled object in life....All these years my great incentive has been to wipe that stain away; to retrieve, if may be, by some action of mine, a name no longer honoured in the land. The more I thought of this, the more convinced I became that, first and foremost, I must be a man. There was to be no cry of decadent artist, of effeminate aesthete, of weak-kneed degenerate. That is the first step. For that I have laboured; for that I have toiled....This has been my purpose for sixteen years. It is so still. I have often fallen away. I have despaired, I have cursed my fate and mocked at the false gods. It is my purpose still. I am no wild, passionate, irresponsible hero. I live by thought, not by emotion. I ask nothing better than to end in honourable battle for my King and Country.http://vassun.vassar...mily/cyril.html
Sadly, the link is a 'dead' one and I wasn't too sharp on keeping other biographical detail. I'll see what I can find. Vyvyan wrote a famous memoir 'Son of Oscar Wilde which mentions a little about his brother's death.
I must confess to being deeply moved by the whole story, and haunted by this famous picture of Constance Wilde with Cyril:http://www.law.umkc....de/CONSTANC.jpg