Father |
| Gwilym Steadman Griffiths | between July 1880 and September 1880 | 30 November 1918
Mother |
| Beatrice James | 18 April 1883 | 19 February 1964
Sister |
Clarys Dwynwen Griffiths |
between January 1905 and March 1905 |
|
|
Sister |
Tydien Mwynfron Griffiths |
between January 1906 and March 1906 |
|
|
|
Vila Idalene Griffiths |
between October 1907 and December 1907 |
|
|
Sister |
Sophia Mary Griffiths |
between October 1908 and December 1908 |
|
|
Brother |
Gwilym Alwyn Steadman Griffiths |
between September 1909 and December 1909 |
6 August 1915 |
|
Sister |
Beatrice Cicely Griffiths |
between January 1911 and March 1911 |
|
|
Brother |
John Thomas James Griffiths |
October 1912 |
28 August 1913 |
|
Brother |
Graham Wynford Griffiths |
9 June 1914 |
9 November 1990 |
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