Yes, HenryBolingbroke was Henry IV.
No. His father Henry IV (Henry Bolingbroke before he became king) usurped the throne from Richard II. In Shakespeare's Henry V, he did express remorse about what his father had done.
House of Lancaster Henry IV ("Bolingbroke," son of the Duke of Lancaster), 1399-1413. Henry V (son of Henry IV), 1413-1422. Henry VI (son of Henry V, deposed), 1422-1471.
Henry IV (13 December 1553 - 14 May 1610) was King of France and was also known as Henry of Navarre (Henri de Navarre). However, Henry IV of England ((15 April 1367- 20 March 1413), known also as Henry (of) Bolingbroke, who also claimed the title King of France was a completely different person who lived two centuries earlier.
Henry IV of ENGLAND was born at Bolingbroke Castle in Lincolnshire. Henry IV of FRANCE was born in Pau, the capital of the French province of Béarn. Henry IV of CASTILEwas born in Valladolid, Spain. Since I wasn't sure of which one, I chose the first three I saw under Henry IV on Wikipedia. For more info, type in "Henry IV" in Wikipedia and you will get planty of results.
The nobles supported Henry Bolingbroke in his rebellion against Richard II because of their loss of land and title. Many of the participants in the Lords Appellants' rebellion were exiled and Henry used their support to seize England.
The nobles were afraid that the king might treat them the same way he treated Bolingbroke, by seizing their lands and banishing them.
Henry the fourth
The Duchy of Lancaster was created for John of Gaunt, a son of King Edward III, in the year 1362. When he died in 1399 the Duchy passed to his son, Henry Bolingbroke. Bolingbroke usurped the throne from King Richard II the same year and became King Henry IV. As king, he merged the Dukedom with the Crown and decreed that it would be personally inherited by the monarch. The present Duke of Lancaster is Her Majesty Queen Elizabeth II - and yes, she is The Duke, not the Duchess.
Henry IV King of England 1399 to 1413 Or Henry IV King of France 1589 to 1610
Bolingbroke has written: 'Six letters, addressed to His Excellency Earl Fitzwilliam, ... By Bolingbroke'
Richard I 1189 - 1199
Henry IV the Faithful died in 1342.