John , 3rd Earl , died at the Battle of Neville 's Cross in 1346 without male heirs .
The earldom went to Patrick Dunbar , who was the husband of one of John 's daughters .
John , 3rd Earl , died at the Battle of Neville 's Cross in 1346 without male heirs , and the earldom went to Patrick Dunbar , who was the husband of one of John 's daughters .