Sorry it's taken a while to reply to your enquiry.
I looked on www.irishgenealogy.ie/ (free online) for O'Shea - Sugrue & Currane - Sugrue marriages and found these:
Marriage of ROGER SUGRUE of NR and MARY SHEA of KILIBOUNA on 9 February 1862
Marriage of MICHAEL SUGRUE of BEENBANE and HELEN SHEA of BEENBANE on 26 November 1870
Marriage of PATRICK O'SHEA of SPA and BRIDGET SUGRUE of SPA on 20 August 1909
Marriage of MICHAEL SUGRUE of COARS and HANORA SHEA of KILOGNAVUM on 16 February 1890
Marriage of JAMES O'SHEA of HARIS STREET and CATHERINE O'SUGHRUE of HARIS STREET on 13 February 1836 TRALEE
Marriage of TIMOTHY SUGRUE of BEALDARIG and BRIDGET SHEA of BEALDARIG on 9 February 1834 KENMARE
There are 143 records to go through and quite a few Shea - Sugrues so I'll leave it to you to check them as I'm not sure any outside Prior are relevant.
There are only a few Currane - Sugrue marriages
Marriage of TIMOTHY SUGRUE of NR and MARY CURRANE of BREAGHUG on 28 February 1867:
Marriage of DANIEL CURRANE of NR and HONORA SUGHRUE of DROMID on 28 November 1853 PRIOR
Marriage of THOMAS O'SUGHRUE of TRALEE and ELLEN CURRANE of TRALEE on 29 May 1836
Marriage of MICHAEL CURRANE of NR and BRIDGET SUGRUE of BOLUS on 9 February 1869 PRIOR