Complex sentence: The meadows had already been protected from flooding by the creation of an embankment; the river wall was built between 1889 and 1893 by Joseph Mears, the father of Chelsea F.C. founders Joseph and Gus Mears.
Split into simpler sentences: The meadows had already been protected from flooding by the creation of an embankment. The river wall was built between 1889 and 1893 by Joseph Mears, the father of Chelsea F.C. founders, Joseph and Gus Mears.