William Henry Dillon Bell (1884–1917) was a Reform Party

New Zealand Reform Party

The Reform Party, formally the New Zealand Political Reform League, was New Zealand's second major political party, having been founded as a conservative response to the original Liberal Party...

 Member of Parliament in New Zealand.

He won the Wellington Suburbs and Country

Wellington Suburbs and Country

Wellington Suburbs and Country was a former parliamentary electorate in Wellington, New Zealand, from 1911 to 1919. The electorate was combined from Wellington Suburbs and Wellington Country electorates....

 seat in the 1911 general election

New Zealand general election, 1911

The New Zealand general election of 1911 was held on Thursday, 7 and 14 December in the general electorates, and on Tuesday, 19 December in the Māori electorates to elect a total of 80 MPs to the 18th session of the New Zealand Parliament...

, and held it to 1914

New Zealand general election, 1914

The New Zealand general election of 1914 was held on 10 December to elect a total of 80 MPs to the 19th session of the New Zealand Parliament. A total number of 616,043 voters were registered, of which 84.7% voters turned out to vote....

, when he retired and volunteered for service in World War I. He served in the Samoa Expeditionary Force, and was killed in action in Belgium in 1917 as a Captain with a King's regiment, the 1st King Edward's Horse

King Edward's Horse

King Edward's Horse was a cavalry regiment of the British Army, formed in 1901, which saw service in the Boer War and the First World War.-Early history:...

.

He was a son of Sir Francis Bell, a Reform Party leader and later the first New Zealand-born Prime Minister.