Sir William (Halyburton) Ruthven - Why is this one NOT the 3rd Lord of Ruthven ???

Sir William (Halyburton) Ruthven is your 11th great grandfather.
Susan Lynne Schwenger, You
→ Lynda Mae Handy - Schwenger
your mother
→ James aka Jim Edward Handy Jr.
her father
→ James aka Jim (Ruthven) Handy SR.
his father
→ Marion aka Marrian Ruthven - Handy - Satchell
his mother
→ Alexander (Thompson) Ruthven
her father
→ Robert (Wotherspoon) Ruthven, Sr.
his father
→ John (Henderson) Ruthven
his father
→ John (Peadie) Ruthven
his father
→ John (Hutcheson) Ruthven
his father
→ George (Reid) Ruthven
his father
→ William Alexander (Clerk) Ruthven
his father
→ William (Gray) Ruthven
his father
→ Sir William (Halyburton) Ruthven
his father, Son of William Ruthven, 2nd Lord Ruthven and Janet Halyburton, Lady Dirletoun

Hi. This is how he appears in my tree:
You
→ Olaug Joakime Lian
your mother → Albert Hanssen
her father → Anna Fredrikke Andreasdatter Myren
his mother → Anna Maria Eriksdatter Eklund
her mother → Magdalene Andersdatter Grape
her mother → Marthe Nilsdatter Kjærbekk
her mother → Malena Mikkelsdatter
her mother → Alette Erichsdatter Lorch
her mother → Erik Hansen Lorch
her father → Hans Ottesen Lorck
his father → Anna Christensdatter Bloch
his mother → Berethe Andersdatter Benkestok
her mother → Eli Pedersdatter Gran
her mother → Adelus Andersdatter von Bergen
her mother → Anders Von Bergen
her father → Anders Von Bergen
his father → Jocelyn Sinclair, til Onarheim
his mother → Henrik Johnson Sinclair
her father → John Williamson Sinclair
his father → Katherine Sinclair, of Herdmanstoun
his sister → Sir William Seton of Seton
her son → Janet Seton of Seton
his daughter → George Halyburton, 3rd/4th Lord Dirletoun
her son → Sir Patrick Halyburton, 5th/6th Lord Dirletoun
his son → Janet Halyburton, Lady Dirletoun
his daughter → Sir William Ruthven, Knight
her son

Sir William Ruthven, Knight, the man being discussed here, appears to have been subjected to one or more bad merges.

His proposed marriage to Isabel Levington suggests that one of the bad merges may have been with William Ruthven, 1st Lord Ruthven

His proposed marriage to Mary Gray suggests that one of the bad merges may have been with Patrick Ruthven, Master of Ruthven or that Mary Gray's husband has been missidentified