Lady Katherine Grey

Katherine Seymour, Countess of Hertford was a younger sister of Lady Jane Grey.

25 August 1540

Born on the same birth day (25 August): Andy McDonald (ice hockey) • Billy Ray Cyrus • David Alan Basche • Frederick Forsyth • George Cisar (baseball) • Giridharilal Kedia • Herbert Kroemer • Ian Falconer • Ippolito II d'Este • Jacques Demers • James Lick • Mario Corso • Nikolay Zinin • Velimir Jovanović • Vivek Razdan • William P. Foster

Born in the same month (August 1540): Joseph Justus Scaliger