Complex sentence: Despite his landmark achievements in other respects, this Earl Russell is most famous for being tried for bigamy in 1901, after which he was known to Edwardian society as the "Wicked Earl".
Split into simpler sentences: Despite his landmark achievements in other respects, this Earl Russell is most famous for being tried for bigamy in 1901. Thenceforth, he was known to Edwardian society as the "Wicked Earl".