[1] His father, Louis Philippe Cumpston, was a builder who went bankrupt in 1873 and decided to emigrate to Australia later that year.
[1] After being briefly educated on the Isle of Man, Louis, his brother and two sisters joined their father in Echuca, about 200 km away from Melbourne.
[1] However, due to the economic downturn in Melbourne at the time, he decided to move to Western Australia, where he became a successful architect.
[1] In 1892, he designed a building on the corner of William and Wellington streets in Perth for a prominent businessman at the time named Wesley Maley.
[1][2] He also designed houses on the corner of Harvest Terrace and Hay Street in 1896 and the Osborne hotel in Claremont in 1901.
[1] In 1909, he designed St Columba's Presbyterian Church in Peppermint Grove, Western Australia.