Baron William Martin

 Avise de Toriton
Avise was born in Great Torrington, Devon, England.  She died after 1246.

 Baron Nicholas de Martin
Nicholas was born in 1193 in Dartingham, Devonshire, England.

 Nichalos fitzMartin
Nichalos was born in 1210 in Darlington House, Devonshire, England.  Nichalos is no longer alive.