Complex sentence: Other historians claim that Berkeley County may have been named in honor of Sir William Berkeley (1610-1677), who was born near London, graduated from Oxford University in 1629, and was appointed Governor of Virginia in 1642.
Split into simpler sentences: Other historians claim that Berkeley County may have been named in honor of Sir William Berkeley (1610 to 1677). He was born near London, graduated from Oxford University in 1629, and was appointed Governor of Virginia in 1642.