Sarah Lloyd of Essex Co, VA

I am posing a long shot question about this Lloyd family, as it has come to that. I am trying to find the maiden name of Sally, the wife of Humphrey Booth Brooke, Sr. They were married about 1790, give or take. She appeared on land deeds with Humphrey between 1791 and 1803, but I have not been able to find out any more about her.

Humphrey's older brother, Robert "Robin" Brooke, IV, died in 1779. In the appraisal of his estate, he owed a Sarah Lloyd some money for seamstress work she had done for him. I'm trying to find out who this Sarah Lloyd was, as they were practically neighbors, and a potential wife of Humphrey. I'd like to find out if Lloyd was her married or maiden name, and as a long shot, whom she may have married. I realize that Sarah was a popular name, but I'm left with groping at straws.