Re: Andriod contacts Sync
my guess is you synced phone 2 with your dads contacts after doing a sync with phone 1. so google picked the latest contacts and used those as backup. Here's my solution, and I hope it works;
If you still need your dad's contacts you will have to export them as a .csv file, into your SD card, plug your SD card in a computer and save them to Google Drive. Then delete all his contacts, back-up will be the .csv file in the Google drive just incase dad demands his contacts back.
Then you will need to send all your contacts to the other device daddy gave you, the do a sync from that device. Google kind of gets confused when you use 2 devices on your one account, not sure why, but this should work.