| Author | Titles | | 1.
| Williams, Dyfri | 1 | | 2.
| Williams, Ederyn | 1 | | 3.
| Williams, Edwin Bucher | 2 | | 4.
| Williams, Eliza | 8 | | 5.
| Williams, Emmett, 1925-2007 | 3 | | 6.
| Williams, Fiona | 1 | | 7.
| Williams, Frederick G. | 3 | | 8.
| Williams, Geoffrey | 1 | | 9.
| Williams, Gilda, 19--?- | 12 | | 10.
| Williams, Graham, 1940- | 3 |
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