| Husband: | Isaac Underlin (1767-1847) | |
| Wife: | Mary Kiddel (1768-1849) | |
| Children: | Thomas Underlin (1803-1874) | |
| Marriage | 24 Sep 1796 | Radwell, Hertfordshire |
| Name: | Isaac Underlin | |
| Sex: | Male | |
| Father: | - | |
| Mother: | - | |
| Birth | 12 Apr 1767 | |
| Death fact | 1847 (age 79-80) | 1847 Sep Qtr, Hitchin, 6/361 (Isaac Underhill) |
| Death | 22 Jul 1847 (age 80) | Hitchin, Hertfordshire |
| Name: | Mary Kiddel | |
| Sex: | Female | |
| Father: | - | |
| Mother: | - | |
| Birth | 1 Jan 1768 | |
| Death fact | 1849 (age 81) | 1849 Jun Qtr, Hitchin, 6/390 |
| Death | 19 May 1849 (age 81) | Hitchin, Hertfordshire |
| Name: | Thomas Underlin | |
| Sex: | Male | |
| Spouse: | Mary Ann Kimpton (1802-1870) | |
| Birth | 1803 | Radwell, Hertfordshire |
| Baptism | 5 Jun 1803 (age 0) | Radwell, Hertfordshire |
| Census | 1851 (age 47-48) | Farm labourer, Chapel Row, Finchley |
| Census | 1861 (age 57-58) | Carman, Hog Market, Finchley |
| Census | 1871 (age 67-68) | Coal dealer, Market Place, Finchley (widower) |
| Death fact | 1874 (age 70-71) | 1874 Sep Qtr, Barnet, 3a/93 (aged 71) |
| Death | 1874 (age 70-71) | Barnet, Middlesex |