Some real sibsets I know, mn included when possible:
Mary (g), Dacia [DAY-sha] (g),
Antoinette (g)
Joel Michael (b),
Cierra Belle (g),
Haley Ann (g),
Ethan (b),
Glory (g),
Phillip (b)
Elijah (b),
Lily Bean (g)
Sara Michelle (g),
Cara (g),
Derek (b)
Greg (b),
Nancy (g),
Sally (g),
William Nicholas (b)
WDYT?