He claimed that he needed to talk to Stephen before switching his oath of fealty .
After the Battle of Lincoln in 1141 , with Stephen in captivity in Bristol , Theobald did not immediately join the Empress .
Theobald claimed that Theobald needed to talk to Stephen before switching Theobald 's oath of fealty .
After the Battle of Lincoln in 1141 , with Stephen in captivity in Bristol , Theobald did not immediately join the Empress .