MOSTYN, Sir Roger, 3rd Bt. (1673-1739), of Mostyn Hall, Holywell, Flints.

b. 31 July 1673, 1st s. of Sir Thomas Mostyn, 2nd Bt.†, of Gloddaeth, Caern. and Mostyn Hall by Bridget, da. and h. of Darcy Savage of Leighton, Cheshire; bro. of Thomas Mostyn*. educ. Jesus, Oxf. 1690. m. 20 July 1703 (with £7,000), Lady Essex Finch (d. 1721), da. of Daniel Finch†, 2nd Earl of Nottingham, sis. of Daniel, Ld. Finch*, 6s. (2 d.v.p.) 6da. suc. fa. as 3rd Bt. 14 June 1692. L. N. V. Mostyn and T. A. Glenn, Fam. of Mostyn, 155–6, 158–60; J. E. Griffith, Peds. Anglesey and Caern. Fams. 183; Add. 61119, f. 182; Luttrell, Brief Relation, v. 315; Studies in Social Hist. ed. Plumb, 157; Chirk Castle Accts. 1666–1753 ed. Myddelton, 297.