Sources

1) Source: Chancery: Inquisitions Post Mortem, Series I, Edward I "Nicholas de Meynill, alias de Meignyll, de Menil...The manor, which was formerly of the fee of Brug, held, jointly enfeoffed with Christiana his wife, who still survives, by the charter of John de Lithgraynis...Nicholas his son, aged 24 at the feast of St. Nicholas last, is his next heir. All held of the said Nicholas of his manor of Bouyngton in the Estryding."Dated: 1298. External Link
https://www.british-history.ac.uk/inquis-post-mortem/vol3/pp422-436. Reference: C 133/92/11 (Data from direct source)
2) Source: Chancery: Inquisitions Ad Quod Damnum, Henry III to Richard III "Nicholas son of Nicholas de Menhill to grant the reversion of the manor of Castle Levington, now held by Christiana, late the wife of Nicholas de Menhill, to John de Menhill and the heirs of his body". Dated: 1310/11. External Link
https://discovery.nationalarchives.gov.uk/details/r/C7570407. Reference: C 143/82/7 (Data from direct source)
3) Source: Chancery: Inquisitions Post Mortem, Series I, Edward II "Nicholas de Menill: Yorkshire... Aldewerk. The manor, held in fee tail, by the enfeoffment of Thomas de Wherleton, parson of the church of Rudby, to the said Nicholas and the heirs male of his body, with remainders to Nicholas, son of Lucy daughter of Robert de Tweng, and the heirs male of his body, and to the right heirs of the said Nicholas de Menill, by fine levied in the king’s court;... but five years before his death he enfeoffed thereof the said Nicholas son of Lucy according to the form of the fine aforesaid. John son of Nicholas de Menill, his brother, aged 40, is his next heir". Dated: 1322. External Link
https://www.british-history.ac.uk/inquis-post-mortem/vol6/pp171-178. Reference: C 134/68/19 (Data from direct source)