Yes Behan, MacLiammoir and Wilde admitted their homosexualiy - and the latter was even imprisoned for it, in Reading.
Pearse probably was too, although some view his somewhat unusual behaviour as a consequence of having aspergers syndrome.
Irish authors and theatre led the world around the time of the war of independence, culminating in 1916.
O'Casey, Joyce and Yeats were others who graced the streets of Dublin at that time - although many left it at an early age, rarely to return.
For example - Wilde, O'Casey, Joyce. Something the Irish Tourist Board often fails to mention. Although the ITB promotes a great Joycean pub crawl...