This is Lady Waterford (front left), in what may have been a specially designed invalid carriage, with members of the Beresford family and other guests at Curraghmore House, Portlaw, Co. Waterford.
Found this great diary entry from Sunday, 2 June 1895
, mentioning Lady Waterford: "... She is a great invalid & was given up by the Drs a year ago so it is a marvel she is still alive...
We originally thought this photo was circa 1900, but mogey
and John Spooner
found that Lady Waterford/Blanche, Marchioness of Waterford died in February 1897. Even better, John Spooner
came back with information that this photo was taken at the celebration of the coming of age of the Marquis of Waterford. See the comments below for details...
Date: August/September 1896
NLI Ref.: POOLEIMP 409
Owner: National Library of Ireland on The Commons
Source: Flickr Commons