I search the IFHF's online database at ROOTSIRELAND.IE. It has abt 19 million B/M/D and other records for MOST Irish counties. Records before 1863 are increasingly sparse. By 1800, they are almost non-existant. Many B/M/D events either weren't recorded, or haven't survived.
For Ch(arles), John, Mari(on), and Marg(aret) Hogg B ?date, Co. Cavan, with a father forenamed W(illiam), I found 0, 1, 0, and 2 records respectively. These results are very inconclusive. Suggest you try to find estimated DOB, or search more counties to find additional records.
Note - Civil B/M/D registration was mandatory after 1863. For civil records, contact the General Register Office at WWW.GROIRELAND.IE (fees apply).