David Lynch is 27 Degrees from Conn O'Neill

0. David Lynch
   →
1. ✖Patricia O'Hern
   (his mother)→
2. ✖Colquitt O'Hern
   (her father)→
3. ✖Lucy Kiser
   (his mother)→
4. ✖Joseph Kiser
   (her father)→
5. ✖Lucinda Daniel
   (his mother)→
6. ✖Joseph Daniel
   (her father)→
7. ✖Joseph Daniel
   (his father)→
8. ✖John Daniel
   (his father)→
9. ✖William Daniel
   (his father)→
10. ✖Elizabeth Williams
    (his mother)→
11. ✖Anne Weston
    (her mother)→
12. ✖Jerome Weston
    (her father)→
13. ✖Richard Weston
    (his father)→
14. ✖Cecilia Neville
    (his mother)→
15. ✖Ralph Neville
    (her father)→
16. ✖Ralph Neville
    (his father)→
17. ✖John Neville
    (his father)→
18. ✖John Neville
    (his father)→
19. ✖Margaret Stafford
    (his mother)→
20. ✖Philippa Beauchamp
    (her mother)→
21. ✖Katherine Mortimer
    (her mother)→
22. ✖Roger Beauchamp
    (her son)→
23. ✖Agnes Beauchamp
    (his daughter)→
24. ✖Mary Burgh
    (her daughter)→
25. ✖Joan Fitzgerald
    (her daughter)→
26. ✖Eleanor Fitzgerald
    (her daughter)→
27. Conn O'Neill
    (her son)

David and Conn are fifth cousins 15 times removed

David Lynch and Conn mac Cuinn O'Neill (1480-1559) are both descendants of Katherine (Mortimer) de Beauchamp (abt.1314-abt.1369).

1. David is the son of Patricia Jeanne O'Hern (1934-2017) 
2. Patricia is the daughter of Colquitt Logan O'Hern (1908-1983) [unknown confidence]
3. Colquitt is the son of Lucy Emma Kiser (1881-1964) [unknown confidence]
4. Lucy is the daughter of Joseph Quinn Kiser (1846-1937) [unknown confidence]
5. Joseph is the son of Lucinda (Daniel) Kiser (1812-abt.1880) [unknown confidence]
6. Lucinda is the daughter of Joseph Daniel Jr (abt.1784-abt.1872) [unknown confidence]
7. Joseph is the son of Joseph Daniel Sr (bef.1730-1795) [unknown confidence]
8. Joseph is the son of John Daniel (abt.1704-1754) [confident]
9. John is the son of William Daniel (abt.1663-1750) [confident]
10. William is the son of Elizabeth (Williams) Daniel (abt.1623-1702) [unknown confidence]
11. Elizabeth is the daughter of Anne (Weston) Williams (abt.1574-abt.1629) [confident]
12. Anne is the daughter of Jerome Weston Knt (abt.1550-1603) [confident]
13. Jerome is the son of Richard Weston (abt.1513-1572) [confident]
14. Richard is the son of Cecilia (Neville) Weston (abt.1491-1573) [confident]
15. Cecilia is the daughter of Ralph Neville (abt.1475-1497) [confident]
16. Ralph is the son of Ralph Neville KB (abt.1456-1499) [confident]
17. Ralph is the son of John Neville (abt.1410-1461) [confident]
18. John is the son of John Neville (abt.1387-bef.1420) [confident]
19. John is the son of Margaret (Stafford) Neville (abt.1365-abt.1396) [unknown confidence]
20. Margaret is the daughter of Philippa (Beauchamp) de Stafford (1334-bef.1386) [unknown confidence]
21. Philippa is the daughter of Katherine (Mortimer) de Beauchamp (abt.1314-abt.1369) [unknown confidence]
This makes Katherine the 19th great grandmother of David. Note: David is descended from Katherine in more than one way (5). 

1. Conn is the son of Eleanor (Fitzgerald) O'Neill (abt.1450-1497) [unknown confidence]
2. Eleanor is the daughter of Joan (Fitzgerald) FitzGerald (1430-1486) [unknown confidence]
3. Joan is the daughter of Mary (Burgh) FitzGerald (1390-1435) [unknown confidence]
4. Mary is the daughter of Agnes Beauchamp (bef.1361-1396) [unknown confidence]
5. Agnes is the daughter of Roger Beauchamp (1341-1361) [unknown confidence]
6. Roger is the son of Katherine (Mortimer) de Beauchamp (abt.1314-abt.1369) [unknown confidence]
This makes Katherine the fourth great grandmother of Conn.