can you see anything on the FamilySearch website ?
https://www.familysearch.orgThe record of particular interest I mentioned, contains these details :
Name: Michael Cruise
Birth date: 26 Feb 1881
Birthplace: Windyarbor, Co. Dublin
Parents : Mathew Cruise & Mary Darcey
the others are :
William Cruise / 12 Jul 1865 / Dundrum & Glencullen (0914)
Mark Cruise / 14 Jan 1867 / Dundrum & Glencullen (0954)
John Cruise / 30 Dec 1868 / Dundrum & Glencullen No 1, Dublin (1012)
Patrick Cruise / 03 Mar 1873 / Dublin
Edward Cruise / 28 Mar 1875 / Dundrum No1
all the above have parents listed as Mathew Cruise & Mary Darcey/Darcy. Dundrum/Dundrum Glencullen is a sub-district of Rathdown and contained the townlands of Balinteer, Churchtown, Dundrum, Farrenboley, Roebuck, Owenstown etc
Shane