Complex sentence: She was called Ella in her youth, and she was the eldest of ten children born to the Watson family, the later four of which were born near Lebanon, Kansas after the family moved there to homestead in 1877.
Split into simpler sentences: She was called Ella in her youth, and was the eldest of ten children born to the Watson family. Four of her siblings were born near Lebanon, Kansas after the family moved there to homestead in 1877.