Complex sentence: Count Erik Dahlberg, (1625-1703) (also "Dahlbergh") was a Swedish soldier, field marshall and engineer who was born of peasant stock in Stockholm, Sweden, but rose to the level of titled nobility due to his military abilities.
Split into simpler sentences: Count Erik Dahlberg, (1625-1703) (also "Dahlbergh") was a Swedish soldier, field marshall and engineer. Dahlberg was born of peasant stock in Stockholm, Sweden, but rose to the level of titled nobility due to his military abilities.