Henry de Lacy
He died in 1310.

 Margaret Longespee
Margaret was born before 1250.  She died after 1281.

 Alice Lacy
Alice was born on December 25th, 1281 in Denbigh Castle, Denbighshire, England.  She died at the age of 66 on October 2nd, 1348.  She was buried in Barlings Abbey, Birling, Kent.