Probably a younger son of the Earl Annesley Year of birth is a guesstimate based on him being about the same age as his wife.
Year of birth is a guesstimate The only child listed under her father's name in Walford so probably the eldest.
Walford: English County Families 1864 ed, (Name: Name: Name: Published, London 1864: Second edition greatly enlarged;;;). 269.
Ancestry.com, Ireland, Select Marriages, 1619-1898, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2014;).
Ancestry.com, UK and Ireland, Find A Grave Index, 1300s-Current, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2012;). Ancestry.com, http://www.Ancestry.com.
Ancestry.com, Cambridge University Alumni, 1261-1900, (Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 1999;). Ancestry.com, http://www.Ancestry.com.
Ancestry.com, Web: Ireland, Calendar of Wills and Administrations, 1858-1920, (Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2016;). Ancestry.com, http://www.Ancestry.com.