Sancho Martínez de Leyva, Iron Arm

Is your surname Martínez de Leyva?

Research the Martínez de Leyva family

Sancho Martínez de Leyva, Iron Arm's Geni Profile

Records for Sancho Martínez de Leyva

2,979 Records

Share your family tree and photos with the people you know and love

  • Build your family tree online
  • Share photos and videos
  • Smart Matching™ technology
  • Free!


Sancho Martínez de Leyva, Iron Arm

Spanish: Sancho Martínez de Leyva, Brazo de Hierro
Death: 1384
Immediate Family:

Son of Adelantado Juan II Martínez de Leyva y Avellaneda and Urraca de Salazar y Ponce de León
Husband of Isabella Plantagenet
Father of Juan III Martínez de Leyva and Dª. Juana García de Leyva, Señora de Hacinas, Quintanilla y Villavaquerín
Half brother of Juana Martínez de Leiva y Castro; Sancha de Leyva, Señora de Leyva; Urraca de Leyva y Manuel; María Martínez de Leiva; Mencía Martínez de Leyva and 1 other

Occupation: Señor de Leiva, Vasallo del Rey de Castilla & del Rey de Inglaterra, & [de su esposa la] Princesa Isabel [hija del Rey Eduardo III de Inglaterra]
Managed by: María Carolina León Romero
Last Updated:

About Sancho Martínez de Leyva, Iron Arm

"Having said so much of the Prince of Wales, I cannot take leave of this subject without paying a just tribute to the memory of the illustrious Spaniard, who was not only his cotemporary, but singularly attached to his person, and to the English nation in general. This was Don Sancho Martinez de Leyva, son of Don John Martinez de Leyva, first lord of the bed-chamber to king Alfonso XI. and Adelantado Mayor of Castile. His son Sancho came over to England, where he offered his services to Edward III. and attended on John duke of Lancaster in his expedition to Scotland. He afterwards went into France, and served under the Prince of Wales, with whom he was at the famous battle and victory of Poictiers. After this he commanded the English army in [77] Picardy, and was very instrumental in the advantages gained over the French in those wars; and from his remarkable strength of body was called Brazo de fierro, or "Iron Arm." In recompence for his services, when he returned to England, Edward III. to testify his regard for his person, gave him in marriage his natural daughter Elizabeth, by Elizabeth Suffolk, countess of Northumberland, granting him further the privilege, in addition to his paternal coat armour, to quarter the armorial bearings of England." Dillon, 76-77.

"There are ascribed to this king [Edward III] two natural children, viz. John Baldac 4, and Isabella, married to Sancho Martinez de Leiva 5, a Spanish nobleman, who on her account quartered the English leopards in his ecutcheon." Carte, 539.

For a discussion of Sancho and the supposed relationship of his wife to Edward III, see Casa de Leiva and ill dau of King of England and Edward III's illegitimate daughter ? at soc.genealogy.medieval, visited Jan. 3, 2013.


apellido: señor de Leiva y Baños, Adelantado Mayor y Merino Mayor de Castilla

ou Juan Martínez de Leiva, Señor de Leiva

view all

Sancho Martínez de Leyva, Iron Arm's Timeline

Leiva, La Rioja, La Rioja, Spain
Villavaqueria, Spain