John De Longueville
John was born about 1210 in Farnley, Yorkshire, England.  He died in 1254 in Hornby Castle, Lancaster, Lancashire, England.

 Elena De Lungvilliers
Elena was born about 1217 in Lancashire, England.

 John De Longueville
John was born about 1240 in Hornby Castle, Lancaster, Lancashire, England.

 Margaret De Longueville
Margaret was born about 1242 in Hornby Castle, Hornby, Lancashire, England.  She died in February 1319 in Laceby, Grimsby, Lincolnshire, England.