Thomas de Clayton
Thomas was born in 1390 in Clayton Manor, Lancashire, Eng.

 Dorothy de Dutton
Dorothy was born about 1392 in Thelwell, Cheshire, Eng.  She died after 1426 in Clayton Manor, Lancashire , Eng.

 Lord John de Clayton
Lord John was born in 1419 in Clayton Manor, Lancashire, Eng.

 William de Clayton
William was born about 1421 in Clayton Manor, Lancashire, Eng.