Brief details of his children:
- His date of birth is simply an estimate based on his son and heir, Hugh, being born in the 1190s(5), and his wife's birth estimated to around 1170 (6).
- "Collections for a History of Staffordshire", Vol 3, Part 1, "Staffordshire Suits - Curia Regis Rolls". An entry on page 133 reads:
ROLL No. 24 TEMP. JOHN.
A fragment undated.
Leic. Juliana de Avinill petens, et Willelmus de Verdun et Alicia uxor ejus, et Philippus de Wastineis et Amphelisia uxor ejus, et Philippus filius Hugonis et Ysolda uxor ejus, tenentes, concordati sunt de v. carrucatis terrę in Kirkebi cum pertinentiis. Ita quod
mediatas totius predicts terrę cum omnibus rebus remanet ipsi Julianse et heredibus suis, quieta de predictis et heredibus eorum salvo capitalem mesuagium quod remanet quietum ipsis tenentibus, et predictum tenementum tenebatur de ipsa Juliana et heredibus
suis, illam scilicet, medietatem per servitium quod pertinet ad illam, salvo blado et catallis qui tune fuerunt super terram qui remanent ipsis tenentibus. Dies datus est in adventu Justiciorum ad faciendum cirographum suum. m. 6.
 This Roll is marked 6 John in modern handwriting.
This must actually be from 1 John (1199/1200), as Philip was dead before John had been on the throne a year (3).
- "Extracts (with notes) from the Pipe Rolls for the counties of Nottingham and Derby", Yeatman, entry on page 59, under "New Offerings", dated 1 John (1199-1200) reads :
Ysolt, the widow of Philip de Derbi, 20m for the custody of her children etc; and the said Isolda released the whole of her lord's money, if there was any, in the abbey of Gerolden and in the abbey of Verlega.
- "Patent Rolls of the reign of Henry III preserved in the Public Record Office AD 1225-1232", 1903, entry on pages 443/4 reads :
1231. Willelmus Basset de Langwait, Eustachius de Ludham, Reginaldus de Colewico et Johannes de Aencurt constituti sunt justiciarii ad assisam nove dissaisine capiendam apud Dereby a die Pasche in tres septimana, quam Johanna que fuit uxor Hugonis filii Phillippi et Hugo filius ejus aramiaverunt versus Walterum abbatem Cestrie de tenemento in Morlegh, Smalleg et Kidesleg; salvis etc. Teste rege, apud Wudestok, x die Januarii.
- See his son Hugh's page
- See his wife Ysoult's page
- "Journal of the Derbyshire Achaeological Society", Volume XVI, 1894, "Early Breadsall Charters", number 4, on page 167, reads :
This is the agreement made between lord Robert de Dun on one part, and Hugh, son of Hugh de Morley, on the other, viz., that the whole land about which there was dispute between lord Robert de Dun and Hugh (de Morley) son of Philip, which lies between Breadsal Wood and Morley-Open-Field, shall lie in pasture common to both vills for ever. Except that land which Gilbert the miller and Hugh son of Henry de Breadsal, hold, which shall quietly remain for ever to the said Robert and his heirs; so that neither the aforesaid Hugh, son of Hugh, nor his heirs, shall ever claim or demand any right thereunto. And that this agreement may stand firm and steadfast for ever, two instruments are made between them, to which their signs are affixed, viz., the instrument which remains in the possession of Robert, with the seal of the said Hugh, and the instrument which remains in the possession of the said Hugh, with the sign of the aforesaid lord Robert. These witnessing: Lord Robert de Esseburn, lord Thomas de Curscun, lord Robert de Muschamp, John de Henoure, Michael de Henover, Roger de Dun, Walter de Morley, Hugh de Dun, John de Weston, clerk, and others.