Frodo Brandybuck?!

[Bêthberry]

Originally Posted by Estelyn Telcontar

How did he become such an isolated person despite growing up in the abundance of family surrounding him there?

Did that come as a result of being orphaned, without any siblings? What do we know of hobbit psychology and early bereavement and grief? And what would it mean to be 'adopted' into a collateral part of the family? Would that actually estrange Frodo?