John 1st Baron Marmion , of Wethrington, Sir
John 1st Baron was born about 1260 in Wethrington, Lincolnshire, England.  He died before May 7th, 1322 in Wethrington, Lincolnshire, England.

 Isabel
Isabel was born about 1265 in England.  Isabel is no longer alive.

 John 2nd Baron Marmion , of Wethrington, Sir
John 2nd Baron was born about 1292 in Wethrington, Lincolnshire, England.  He died on April 30th, 1335 in Wethrington, Lincolnshire, England.