1803 is just a ball park figure for William's death. All we know is that William gave all of his land to his wife and ONLY his son Jesse. He did not have a Will.
According to the Will of Stephen Heard who died in 1774, his daughter Mary Heard was to inherit land IF she were to produce issue. He named 2 of her sisters who would receive her land IF she never had issue. Since this land was later sold by the two sisters, that means Mary never had issue. We think William Heard was her cousin.
My William Heard never had a son William as far as I know. I descend from George who was from his first marriage to an unknown woman. His second wife was named Margaret on deeds and we can document that they had 3 sons. However, only Jesse inherited land.
My George was born ca 1749 in Ablemarle Co. VA where many of the Heards had gone after leaving PA. George is only found with William in Southside VA. We believe that George must have married one of the Longhunters daughters since he went over the Blue Ridge when they did and never left any records in Henry Co. VA. I don't think he was into buying land in Southside VA.
We do not know who this George Heard in Sullivan Co. is in 1786 who signs a petition with some of the Longhunters' names we recognize. Since William Bean left Pittsylvania Co. ca 1771 and went to now TN, we thought that this might be our George since they had known each other years earlier. Just a wild thought.
My George has more records back in VA after 1786 and I followed him to Lee Co. VA on the last deed date of 1804. Now, it seems that his dau, Rosannah Heard Rogers was living in Hawkins Co. TN when she died ca 1806. We find other Heards there whom we believe are her brothers especially John Heard. I do not know if George died in VA or in TN. If he died in TN it would be before 1830 as we find an elderly Heard widow who would be in his age range. Never have found a marriage for him in the Pittsylvania Co. VA marriage books.
William, his father, must have been Church of England since they met at his home. Thomas Faulkner, the father of Mary Faulkner, was Church of England at one time. We did find his marriage record in the church.
If you want the complete first 5 generations of our Heards in the US, you need to look for a copy of Joyce Poole's Heard Family History written in 2005. Check with Worldcat.