Ida de Multon

Whoever this is, she isn't the Isabel de Bolteby who married Thomas de Lucy (not Thomas de Multon of Egremont, who was the other Thomas' double first cousin).

THOMAS de Multon of Egremont (4 May 1225-before 29 Apr 1294). The Cronicon Cumbriæ names “Amabillam et Aliciam, et successit Amabillæ Lambertus de Multon” as the children of “Reginaldo de Lucy” and his wife, adding that Lambert was succeeded by “Thomas de Multon de Egremond”[1626]. m firstly IDA, daughter of ---. m secondly as her second husband, ELIZABETH, widow of JOHN de Munemuth, daughter of --- ([1276/78]). m thirdly (before 1288) MARGARET, daughter of --- (-after Dec 1313).

We can eliminate Margaret, because she married Thomas de Multon too late to be the mother of his (only known) child Thomas de Multon the younger. Elizabeth has been plausibly identified as the widow of John (the Elder) of Monmouth (d. 1257), which would put her out of the running also. So Thomas de Multon m. Emoine le Botiller was probably the son of Ida.