Complex sentence: Margaret Foster was born in Reading, Pennsylvania to David and Nancy (Adamson) Foster, and grew up in Rowayton, Connecticut with four siblings: sisters Gray, Jan, and Nina, and brother Ian.
Split into simpler sentences: Margaret Foster was born in Reading, Pennsylvania, the daughter of David and his wife Nancy (Adamson). Foster grew up in Rowayton, Connecticut with her parents and four siblings: sisters Gray, Jan, and Nina, and brother Ian.