Speculations Whitebeard's Brothers and Sisters

#1
So with the recent chapter there's a differentiation made in Whitebeard's family, where as prior it was just assumed everybody was his "son" (which I found to be weird). With the recent chapter, Whitebeard continuously uses "family" and describes Oden as his "brother"/"little brother", a different relationship than he has with his sons.

So question arises, were there other individuals who were his brothers and sisters? I remember Marco mentioning that all of WB's friends passed away (whether it was just related to the island or in general idk). Leave your speculations.
 
#3
Maybe the aprentices on the ship become his sons and thoes that were before that created their own crew become brothers and sisters. Remeber that there were supposedly no women in the crew but we can clearly see one
 
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