| Birth | Abt 1865 | St Pancras, London | | | |
| Baptism | 9 Jun 1865 | St Pancras Parish Church, London | | | |
| Residence | 1871 | with his parents - 1, St Albans Road, Highgate Road, London | | | |
| Residence | 1881 | as a boarder - Eton College, Buckinghamshire | | | |
| Education | 1881 | Eton College, Buckinghamshire | | | |
| Education | 1883 | and entered in the Michaelmas term - Trinity College, Cambridge | | | |
| Residence | 1891 | As a lodger (as was brother James) - Waveney Villa, Esplanade, Ventnor, Isle of Wight | | | |
| Residence | 1901 | with his widowed mother - 1, St Albans Road, Highgate Road, London | | | |
| Occupation | 1901 | solicitor's clerk - London | | | |
| Marriage | 6 Oct 1910 | Llanbadarn Fawr Parish Church, Cardiganshire - Mary Roberta Ceridwen JONES |  | | |
| Residence | 6 Oct 1910 | 5, Caergog Terrace, Aberystwyth, Cardiganshire | | | |
| Occupation | 6 Oct 1910 | solicitor | | | |
| Residence (family) | 1911 | with Hywel's unmarried sister Mary Anne - 10, Old Park Ridings, Winchmore Hill, Middlesex - Mary Roberta Ceridwen JONES | | | |
| Occupation | 1911 | solicitor (not in practice) - 10, Old Park Ridings, Winchmore Hill, Middlesex | | | |
| Death | 7 Feb 1934 | The Mount, Llandogo, Monmouthshire | | | |
| Probate | 6 Apr 1934 | London | | | |