Well here is all the Lugias in the Bronze Luga Family. Plus a Latias.

From Left to Right:
Cetos the Lutias/Lagias
Lati the Latias (Mother of Cetos, Silver's Mate)
Silver the Lugia (Father of Cetos, Lati's Mate)
Bronze the Lugia (Father of Silver and Goldie, Grandfather to Cetos, Onyx and Rubi)
Goldie the Lugia (Mother of Onyx and Rubi)
Onyx the Lugia (Son of Goldie)
Rubi the Lugia (Daughter of Goldie)