Complex sentence: His younger brother William George Thistle (1856-1901) was a medical doctor and described as: William George MRCS LRCP was a most engaging scamp of dissolute habits, an amusing raconteur and bonviveur generally.
Split into simpler sentences: His younger brother William George Thistle (1856-1901) was a medical doctor. A description of him stated that: William George MRCS LRCP was a most engaging scamp of dissolute habits, an amusing raconteur and bonviveur generally.