Baron Powerscourt of Powerscourt in Wicklow is in Baron Ireland.
The London Gazette 25486. Whitehall, July 2, 1885. The Queen [aged 66] has been please'd to direct Letters Patent to be passed under the Great Seal, granting the dignity of a Baron of the United Kingdom of 'Great Britain and Ireland unto the undermentioned persons and the heirs male of their respective bodies lawfully begotten, namely:
Mervyn Edward [aged 48], Viscount Powerscourt, in that part of the United Kingdom called Ireland, K.P., by the name, style, and title of Baron Powerscourt, of Powerscourt, in the county of Wicklow.
Sir Nathaniel Mayer Rothschild [aged 44], Bart., by the name, style, and title of Baron Rothschild, of Tring, in the county of Hertford. [Emma Louise von Rothschild Baroness Rothschild [aged 41] by marriage Baroness Rothschild of Tring in Hertfordshire]
Edward Charles Baring [aged 57], Esq., by the name, style, and titie of Baron Revelstoke, of Membland, in the county of Devon. [Louisa Emily Charlotte Bulteel Baroness Revelstoke [aged 46] by marriage Baroness Revelstoke of Membland in Devon]
The Right Honourable Sir Robert Porrett Collier [aged 68], Knt., a Member of the Judicial Committee of the Privy Council, by the name, style, and title of Baron Monkswell, of Monkswell, in the county of Devon. [Isabella Rose Baroness Monkswell [aged 70] by marriage Baroness Monkswell of Monkswell in Devon]
The Right Honourable Sir Arthur Hobhouse, K.C.S.I., C.I.E., a Member of the Judicial Committee of the Privy Council, by the name, style, and title of Baron Hobhouse, of Hadspen, in the county of Somerset.
Sir Ralph Robert Wheeler Lingen, KC.B., by the name, style, and title of Baron Lingen, of Lingen, in the county of Hereford.
The Right Honourable Edward Gibson, Chancellor of that part of the United Kingdom called Ireland, by the name, style, and title of Baron Ashbourne, of Ashbourne, in the county of Meath.
Rowland Winn [aged 65], Esq., by the name, style, and title of Baron Saint Oswald, of Nostell, in the West Riding of the county of York [Harriet Dumaresq Baroness St Owsald by marriage Baroness St Oswald of Nostell in the West Riding of Yorkshire.]