Complex sentence: Florence Martus, also known as "The Waving Girl" (1868--1943) took it upon herself to be the unofficial greeter of all ships that entered and left the Port of Savannah.
Split into simpler sentences: Florence Martus, also known as "The Waving Girl" was born in 1868 and died in 1943. She took it upon herself to be the unofficial greeter of all ships that entered and left the Port of Savannah.