Seeking family

I am trying to contact the McGuigan family from Belturbet, County Cavan, Ireland.  My mother's maiden name was McGuigan and she lived in Holburn Hill, Belturbet, County Cavan.  My mother passed away last year and I would like to contact any family still in the County Cavan area.  I would love to communicate with any extended family who is happy to do so.  I grew up knowing no grand parents or uncles/aunties etc.  My mother and father moved from Ireland to the UK and contact was lost.  Please, if you can assist me in locating my family, help.  Thank you.