William Trench | |
|---|---|
| Earl of Clancarty | |
 A photograph of William Frederick Le Poer Trench | |
| Earl of Clancarty | |
| Predecessor | Richard Trench, 4th Earl of Clancarty |
| Successor | Richard Trench, 6th Earl of Clancarty |
| Born | William Frederick De Poer Trench 29 December 1868 |
| Died | 16 February 1929 (aged 60) |
| Spouses | Belle Bilton, Mary Gwatkin Ellis |
| Issue |
|
| Father | Richard Trench, 4th Earl of Clancarty |
| Mother | Adeliza Hervey |
| Occupation | Politician |
William Frederick Le Poer Trench, 5th Earl of Clancarty, 4th Marquess of Heusden (29 December 1868 – 16 February 1929) was an Irish peer of the House of Lords, a Dutch nobleman, and a deputy lieutenant and justice of the peace of County Galway. He was known for the controversy that ensued after a petition for divorce was argued in 1890, which was based on an affidavit accusing his wife at the time, Belle Bilton, of adultery.