See also
| Partner: | Alexander de IRWIN (c. 1360-1411) | |
| Partner: | (unknown) | |
| Children: | Alexander IRWIN ( - ) | |
| Robert (Alexander) de IRWIN (c. 1380- ) | ||
| Name: | Alexander de IRWIN | |
| Sex: | Male | |
| Father: | William 'Thomas' de IRWYN (c. 1315-c. 1390) | |
| Mother: | Daughter MONTFORD (c. 1330- ) | |
| Birth | c. 1360 | |
| Occupation | 3rd Laird of Drum | |
| Death | 1411 (age 50-51) | |
| Name: | Alexander IRWIN | |
| Sex: | Male | |
| Occupation | 4th Laird of Drum | |
| Name: | Robert (Alexander) de IRWIN | |
| Sex: | Male | |
| Spouse: | Elizabeth KEITH (c. 1382- ) | |
| Birth | c. 1380 | |
| Occupation | 4th Laird of Drum | |