I have a NJ marriage record for Ellen Garvey (aka Nellie) born abt 1864 that identifies her parents as Bernard Garvey and Ellen Muldoon. Some searching on Ancestry suggests they are from Dysart & Tisara, Ballyforan, Roscommon.

Information also suggests her siblings were Honoria, Brigida, Catharina, Maria, Anna, Rosa Anna, and Bernardus. I used the spellings of names from the records of Catholic Parish Baptisms 1742-1881. One of my issues is that Ellen (aka Nellie) is not among the listed records.