A manuscript narrating the foundation of Wigmore Abbey records that “Radulphus frater eius” succeeded on the death of “Hugo”, adding that he was born from his father´s second marriage, built “duo castra…Kevencles et Knoclas”, died “VIII Id Aug 1247” and was buried “in abbathia de Wygemore”. "Ralph de Mortimer" made a fine "for having seisin of the lands formerly of Hugh de Mortimer, his brother", dated [Nov] 1227. The Annales Cambriæ record the death in 1246 of "Radulphus de Mortuo Mari". 1
----------------------------------
23 Nov 1227, Neuwerch
Radulfus de Mortuo Mari fecit finem cum domino rege per c libras pro relevio suo et pro habenda saisina omnium terrarum que fuerunt Hugonis de Mortuo Mari qui de domino rege tenuit in capite, et que ipsum Radulfum jure contingunt hereditario; et inde cepit dominus rex homagium ipsius. Et mandatum est vicecomiti Herefordie quod de castro de Wiggemora, quod est in custodia sua, et de omnibus terris que fuerunt predicti Hugonis in ballia sua et que ipsum Radulfum jure contingunt hereditario, eidem Radulfo sine dilatione plenam saisinam habere faciat.
Calendar of Patent Rolls, Hen. III, vol. 2, p. 171
23 Nov 1227
Ralph de Mortimer has made fine with the king by £100 for his relief for having seisin of the lands formerly of Hugh de Mortimer, his brother, who held of the king in chief, which fall to Ralph by hereditary right, and the king has taken his homage. Order to the sheriff of Gloucestershire to cause him to have full seisin without delay of all lands formerly of the same Hugh in his bailiwick which fall to Ralph by hereditary right.
Calendar of Fine Rolls, 12 Hen. III, 31
----------------------------------
After 19 Jan 1228
Ralph de Mortimer owes £100 for his relief of the lands formerly of Hugh de Mortimer, his brother, which fall to Ralph by hereditary right.
12 May 1228, Guildford
The king has granted to Ralph de Mortimer that, of the debts he owes him, he may render £20 this year, namely £10 at Michaelmas in the twelfth year and £10 at Easter in the thirteenth year. Order to the sheriff of Gloucestershire to permit him to have that respite.
Calendar of Fine Rolls, 12 Hen. III, 66, 174
----------------------------------
8 Jul 1229
To the barons of the Exchequer. The king has pardoned to Ralph de Mortimer, brother and heir of Hugh de Mortimer, for his faithful service, up to £500 of the £511 2s. 4d. that is exacted from the same Ralph at the Exchequer for the same Hugh of the fine which Roger de Mortimer, father of Hugh and Ralph, made with King John, the king’s father, for having custody of Walter de Beauchamp, and of the 46 marks that are exacted at the Exchequer from Ralph for Hugh for the first scutage of Poitou from the time of the king’s father, and of the 500 marks that are exacted at the Exchequer from Ralph for Hugh of the fine that he made with the king’s father for having the lands of Roger, his father, and of 10 marks and two hawks that are exacted at the Exchequer from Ralph for Hugh for the delivery of Reginald Russell, and of £100 and a valuable destrier, and of the 30 marks that are exacted at the Exchequer from Ralph for Hugh for Martin Champion, and of the 20 marks that are exacted at the Exchequer from Ralph for Hugh for disseisin, and of £100 that are exacted at the Exchequer from Ralph for his relief, the sum total of which is £1115 2s. 4d. Ralph is to render £20 of which £500 to the king each year at the Exchequer at two terms, namely £10 at Michaelmas and £10 at Easter, until he will have rendered the aforesaid £500 to the king in full...
Calendar of Fine Rolls, 13 Hen. III, 255
----------------------------------
27 Jun 1230
Order to the barons of the Exchequer to place in respite the demand they make by summons of the Exchequer from Ralph de Mortimer, who has set out for overseas parts with the king by his order, for the prest of Ireland, Wales, Scotland and Barham Down from the time of King John etc., until his return from the aforesaid parts.
Calendar of Fine Rolls, 14 Hen. III, 382
----------------------------------
15 May 1231, Gloucester
Rex commisit Radulfo de Mortuo Mari castrum et honorem de Clune cum pertinenciis, custodiendum quamdiu regi placuerit. Et mandatum est militibus et liberis hominibus et omnibus aliis tenentibus de eodem honore, quod eidem Radulfo tamquam custodi suo in omnibus que ad predicta castrum et honorem pertinent, intendentes sint et respondentes.
Calendar of Patent Rolls, Hen. III, vol. 2, p. 434
----------------------------------
10 May 1232, Westminster
The king has granted to Ralph de Mortimer that, of the 60 marks which are exacted from him at the Exchequer for a prest of Ireland from the time of King John, his father, he may render 100s. to the king every year at the Exchequer, namely 50s. at the Exchequer of Michaelmas and 50s. at the Exchequer of Easter, beyond the £20 which the king granted to him to be rendered per annum from other debts he owes him, so that in all he is to render £25 per annum at the Exchequer at the aforesaid terms until the aforesaid debts are paid....
Calendar of Fine Rolls, 16 Hen. III, 112
----------------------------------
10 Aug 1246, Merleberg
Ex quo Radulfus de Mortuo Mari diem clausit extremum, mandatum est Gladus' de Mortuo Mari et Henrico de Mortuo Mari quod castra que fuerunt ipsius Radulfi in Wallia liberent Waleramo Teutonico custodienda.
25 Oct 1246, Westminster
Mandatum est Henrico de Wingeham, excaetatori regis, quod in foresta de Wyre que fuit Radulfi de Mortuo Mari faciat habere Johanni de Pless' xx. quercus ad maeremium, de dono regis.
Calendar of Close Rolls, 30 Hen. III, pp. 450, 470
Orthographic variation: DE MORTUO MARI