Martín Alfonso de León

Martín Alfonso de León
founder of Sancti Spiritus
convent in Salamanca
Bornc. 1220
Diedbef. April 1272 (aged 52)
Noble familyCastilian House of Ivrea
Spouse(s)María Méndes de Sousa
FatherAlfonso IX of León
MotherTeresa Gil de Soverosa

Martín Alfonso de León (c. 1220  before April 1272) was an illegitimate son of Alfonso IX of León by Teresa Gil de Soverosa, a Portuguese noblewoman, daughter of Gil Vasques de Soverosa and María Aires de Fornelos, also mistress of King Sancho I of Portugal with whom she had a son and daughter.