Nielsen Hayden genealogy
Descendants of Thomas de Haya
- Bef 1335Father: Gilbert de Haya (of Locherworth, East Lothian, Scotland - ??)
Mother: Mary Fraser
Thomas de Haya (of Locherworth, East Lothian, Scotland - Bef 15 Oct 1335)
   └─ William de Haya (of Locherworth, East Lothian, Scotland - Aft 3 Oct 1357)
   
       └─ Thomas de Haya (of Locherworth, East Lothian, Scotland - Between 1393 and 1 Dec 1399)
        Joanna Gifford ( - Aft 1399)
           └─ William Hay (of Locherworth, East Lothian, Scotland - Bef Aug 1421) =>
            + Elizabeth
            + Alicia Borthwick