Namesakes
Characters in Celtic Mythology:
5 characters
Lugaid Íardonn (a.k.a. Lughaidh) (m) 
Lugaid Lámderg (a.k.a. Lughaidh) (m)
Lugaid Loígdech (a.k.a. Lughaidh) (m)
Lugaid Luaigne (a.k.a. Lughaidh) (m)
Lugaid Riab nDerg (a.k.a. Lughaidh) (m)
Irish Kings:
7 kings
King Lugaid Íardonn (a.k.a. Lughaidh) 658-649 BC
King Lugaid Lámderg (a.k.a. Lughaidh) 616-609 BC
King Lugaid Loígdech (a.k.a. Lughaidh) 537-530 BC
King Lugaid Luaigne (a.k.a. Lughaidh) 140-135 BC
King Lugaid Riab nDerg (a.k.a. Lughaidh) 33-13 BC
King Lugaid mac Con (a.k.a. Lughaidh) 173-203
King Lugaid mac Lóegairi (a.k.a. Lughaidh) 483-507
Saints:
1 saint
Saint Lua (a.k.a. Lughaidh) ?-609