Entail foundation deed by which Isabel de Avelar, wife of Henrique Nunes de Leão, establishes an entail with all of her properties. She appoints her grandson, Jorge Nunes de Leão, legitimized son of her deceased son, Martinho Gonçalves, as her universal heir. He shall order a daily mass in the convent of S. Francisco de Xabregas, to be paid with revenue from her houses in Lisboa. His sucessors shall have the surname and coat of arms of the Leão family. If his lineage is extinguished, the entail shall pass to the lineage of Isabel do Avelar's nephew, João de Avelar or to the lineage of João Taveira, her great-nephew, who shall keep the Avelar surname.