Complex sentence: While Richmond and his brother "Tums" developed the stroke, they were later inspired by Alick Wickham, a young Solomon Islander resident in Sydney who swam a version of the crawl stroke that was popular in his home in the Roviana Lagoon.
Split into simpler sentences: While Richmond and his brother "Tums" developed the stroke, they were later inspired by Alick Wickham, a young Solomon Islander who was living in Sydney. He swam a version of the crawl stroke that was popular in his homeland in the Roviana Lagoon.