Chaucer’s father was royal vintner to Royal family and received a yearly stipend. This was continued with Chaucer himself. He grew up in the court of
Edward III. He himself actually received a yearly stipend from the Royal court as the official literary writer. His wife was actually lady in waiting to Queen Phillipa. Chaucer actually grew up with the 10 children at court of Edward III
Including Edward IV the Black Knight, Edmund of York, and John Ghent, Duke of Lancaster. I learned this from Professor who was Chair of Medieval Literature at Rice University, while taking her class on Chaucer. She is the expert on everything that has to do with Chaucer.
The actual death date is unknown. He left public life in1399 to be harbored by the monastery at Westminster Abbey. No one knows why. The plaque in his burial spot in Abbey was placed at a later date.