Recently I've been looking for info on Joan Plantaganet, not because I think I'm a descendant, but because I was curious about her. Joan (1328-1385) was a granddaughter of Edward I, She married Sir John Holland (steward of the Royal Household) and had 5 children (2 died young), Thomas de Holland (2nd Earl of Kent, title came from Joan) was b1350. There was an earlier marriage contract w/Wm de Montacute (2nd Earl of Salisbury) which was declared bigamous and annulled. She was Countess of Kent and Lady Wake of Liddell in her own right. The Black Prince (Edward 1330-1376) was her second husband, there were 2 sons, Edward b1365 (died young) and Richard b1367 (Richard II). She died in 1385 and is buried at Greyfriars Church in Stamford, England.