Complex sentence: She never legally married Wilfred LaBarre, but took on his last name ("Sheila LaBarre") and they lived together from 1987 until his death at age 74 in 2000.
Split into simpler sentences: She never legally married Wilfred LaBarre, but took on his last name ("Sheila LaBarre"). They lived together from 1987 until his death at age 74 in 2000.