Hi,found a few bits that may help.
1901 Irish census:
Reevanagh,Tiscoffin,Kilkenny
Martin Kavanagh age 39,head of house,roman catholic,born Carlow,agricultural labourer,married
Margaret Kavanagh age 30,wife,roman catholic,born Kilkenny,married
Mary Kavanagh age 14,daughter,roman catholic,born Kilkenny,scholar,single
Kate Kavanagh age 9,daughter,roman catholic,born Kilkenny,scholar,single
Margaret Kavanagh age 7,daughter,roman catholic,born Kilkenny,scholar,single
Patrick Kavanagh age 5,son,roman catholic,born Kilkenny,single
Martin Kavanagh age 4,son,roman catholic,born Kilkenny,single
Ellen Kavanagh age 0,daughter,roman catholic,born Kilkenny
I have found the births of some of the children in Kilkenny:
Mary Kavanagh born 1887
Patrick Kavanagh born 1896
Martin Kavanagh born 1897 and again in 1898(the 1st little boy must've died)
Ellen Kavanagh born 1901
for the two middle daughters it was different;
Kate Kavanagh born July-Sept 1892 Carlow
Margaret Kavanagh born April-June 1893 Carlow
* I could not locate them in co Kilkenny
Martin Kavanagh and Margaret Malone were married in 1886 in co Kilkenny
I found a few births for Margaret;
b 21 May 1867 Dysartmoon,Kilkenny to John Malone/Bridget Lalor(Lawler)
b 18 Apr 1864 Inistioge,Kilkenny to John Malone/Margaret Fleming
b 11 Jan 1868 Kilkenny to Patrick Joseph Malone/Bridget Agnes Carroll
b 27 March 1869 Kilkenny to Thomas Malone/Mary Bolger
This by all means are not all the births for Margaret Malone.If you go onto the pay per view site rootsireland.ie they have 22 births for Margaret between 1858-1872.
for Martin I have found 1 so far........
b 3 November 1861 to James Kavanagh/Biddy Kavanagh of Kildavin,Clonegall,Carlow
* I have a few other places to check and I will get back to you.
What I would recommend is to go onto rootsireland.ie,buy credit to get a copy of their marriage cert and hope at least one name of parent(s) is on it or contact the GROIreland online and order a copy of the marriage cert for 4 euro.They even have the facility now to e-mail you the cert.If you do find their parents I may be able to help further.Hope this helps,Kim