Complex sentence: His family emigrated to the U.S. and arrived on 3 February 1901 on the SS Dresden when he was less than a year old, settling first in Louisiana where his paternal grandmother had family and later moving to New York City.
Split into simpler sentences: His family emigrated to the United States, arriving on February 3,1901 on the "SS Dresden" when he was less than a year old. They settled first in Louisiana where his paternal grandmother had relatives, but later moved to New York City.