Sir Edward O'Brien, 4th Baronet was born on 17 April 1773. He was the son of Sir Lucius O'Brien, 3rd Baronet

Sir Lucius O'Brien, 3rd Baronet

Sir Lucius Henry O'Brien, 3rd Baronet PC was an Irish baronet and politician for 34 years.-Background:...

 and Anne French. O'Brien married Charlotte Smith, daughter of William Smith, on 12 November 1799. He died on 13 March 1837 at age 63.

Children of Sir Edward O'Brien, 4th Bt. and Charlotte Smith;

Lucius O'Brien, 13th Baron Inchiquin

Lucius O'Brien, 13th Baron Inchiquin

Lucius O'Brien, 13th Baron Inchiquin , known as Sir Lucius O'Brien, 5th Baronet from 1837 to 1855, was an Irish politician and nobleman.-Biography:...

 also created 5th Baronet,

Henry O'Brien,

Edward O'Brien

William O'Brien

William Smith O'Brien

William Smith O'Brien was an Irish Nationalist and Member of Parliament and leader of the Young Ireland movement. He was convicted of sedition for his part in the Young Irelander Rebellion of 1848, but his sentence of death was commuted to deportation to Van Diemen's Land. In 1854, he was...

.