Namesakes
Irish High Kings:
3 kings
King Conall I Collamhrach 218-213 BC 
King Conall II 642-654
King Conall III 654-658
Saints:
1 saint
Saint Conal (a.k.a. Conall) ?-500
Scottish Kings and Queens:
3 kings
King Conall mac Comgall 558-574
King Conall Crandomna 650-660
King Conall mac Taidg 785-789