Nielsen Hayden genealogy
Ancestors of Margaret de Sancta Cruce
│ ┌── Richard de Markham
│ ┌── Robert de Markham ( - Between 1294 and 1303)
│ │ │ ┌── Robert de Lexington
│ │ │ ┌── Richard de Lexington (of Tuxford, Nottinghamshire, England - ??)
│ │ └── Ceclia de Lexington
│ │ └── Maud
│ │
└── Agnes de Markham