It's really not uncommon in cricket ( or any sport really) for people to be eligible for more than one team. It's not a big deal. As it happens they nearly all play for the country they grew up in rather than their parentage or where they were born but it's up to the player.
Also, a great morning for England. Key handful of overs after lunch, blunt them then and batting will get much easier. Obviously we can still mess it up...
This is an England cricket team after all....