When you look at this line Sancho was born in 1110 but his father Sancho López de Ulloa was born in 1240 and his mother María Ruiz was born in 1105. Follow this line 7 generations back to D.Sancha Vasques Sarraza who was born in 1125 and her father Vasco Peres Sarraza was born in 1230, no mother listed. If you follow this line starting with Sancho back to Vasco Fernaders also born in 1110 you have 12 generations of your family tree. I just followed the line from Sancho back to Vasco in Geni to make sure I had not put something down wrong.
Vasco Fernandes b.1110. Below is the timeline.
Gil Vasques de Soverosa b.1160
Teresa Gil de Soverosa b.1170
María Afonso de León b.1190
Pedro Soares Sarraza b.1210
Vasco Peres Sarraza b.1230
D.Sancha Vasques Sarraza b.1125
Martín Yáñez Mariño b.1130
María Martínez Mariño b.1155
Lope Rodríguez de Ulloa , III Señor de Villamayor de Ulloa b.1175
Lope Sánchez de Ulloa , IV Señor de Villamayor de Ulloa b.1180
Sancho López de Ulloa , I Señor de Rojas b.1240
Sancho Sánchez de Rojas , II Señor de Rojas b.1110
