No sources or evidence have been found to support the parents of siblings Thomas Alcock, George Alcock, and Elizabeth (Alcock) Whitehead. Anderson claims their origins to be unknown. None of the following currently attached parents have sufficient evidence/sources/proof to support a relationship. If at some time this becomes available they can be reattached.
I would like to suggest
1) John Alcocke-18 be changed to Unknown Alcocke. The data can be preserved in a note in the bio. The three siblings need a parent to hold them together.
2) Alcock-84 George Alcock and Elizabeth Alcock-95 be disconnected from John & Alice and attached to Unknown Alcock.
Then the merge of Alcocke-17 and Alcock-13 (clearly duplicates) can happen.
Of course if someone has some proof of these parents please speak up.