Ralph De Monthermer
He died on April 5th, 1325.

 + Joan of Acre Plantagenet
+ Joan of Acre was born in 1272 in Acre, Hazafon, Israel.¹   She died at the age of 35 on April 23rd, 1307 in Clare, Suffolk, , England.  She was buried on April 26th, 1307 in Priory Church of the Austin Friars, Clare.^1 1 

 Thomas De Mortimer
Thomas was born in 1298.  He died at the age of 73 in 1371.

 Mary De Monthermer
Mary was born in 1298.  She died about 1371.

 Joan De Mortimer
Joan was born in 1299.

 Edward De Mortimer
Edward was born in 1304.  He died at the age of 36 in 1340.