| John de Mowbray * Mowbray | Joan of Lancaster | John de Segrave * Segrave | Margaret of Norfolk |
| John de Mowbray * Mowbray | Elizabeth de Segrave * Segrave | ||
| SirThomas Lord, 1st Earl, 1st Duke de Mowbray * Mowbray, Segrave and Stourton * of Nottingham * of Norfolk*22.3.(1365/1366), +22.9.1399 |