Henry Bolingbroke

Type Figure Region England Time 1367–1413 Also known as Henry Bolingbroke、Henry of Lancaster、Henry IV

Heir of Lancaster, born at Bolingbroke in 1367, eldest son of John of Gaunt.…

Timeline

1387–1388London · LondonIn 1387 he joined with nobles such as the Duke of Gloucester in opposing the king's favorites; in 1388 he impeached and helped drive the execution of several of Richard's close associates, curbing the expansion of royal power.
1388–1390Westminster · LondonAppointed Lord Chief Justice in 1388, he effectively took part in the government led by the Lords Appellant; his relations with Richard II remained tense until around 1390, planting the seeds for his later exile and seizure of the throne.

Henry IV https://www.britannica.com/biography/Henry-IV-king-of-England
Henry IV: The Establishment of the Lancastrian Dynasty — Chris Given-Wilson (2016)
Henry [Henry of Bolingbroke], earl of Derby and duke of Hereford (DNB) — James Tait (2004) https://www.oxforddnb.com/display/10.1093/ref:odnb/9780198614128.001.0001/odnb-9780198614128-e-12951