Making Light:  The return of the final serial comma's vital necessity ::: October 25, 2010, 10:36 AM

Cynthia W @ 102 -- According to the link Neil supplied,

  Duvall has been married four times, first to Barbara Benjamin from
  1964 until 1975.  He then married Gail Youngs (1982-1986 ...), and
  Sharon Brophy (1991-1996)....  In 2005, Duvall wed Luciana Pedraza ....

so Neil's question, "Which two?" clearly refers to Duvall's exes.
Perhaps, given the odd Wikipedia construction, we are supposed to
count Gail and Sharon as one ex-wife.