Deane, Sir Thomas Manly (1851-1933)
Eldest son of Sir Thomas Newenham Deane, he studied in London and France before joining his father’s practice in 1878. Their firm T.N Deane & Son won the competition to design the National Museum and Library complex around Leinster House. This was completed in 1890. He was also the architect with Sir Aston Webb of the Royal College of Science (now Government Buildings).