Alexios Komnenos Vatatzes

Alexios Komnenos Vatatzes (c. 1140–after 1166), married Maria Pegonitissa c. 1158, he is last attested in the synod of Blachernae in March 1166. He was the father of Isaac Komnenos Vatatzes.[11]

• https://en.wikipedia.org/wiki/Theodore_Vatatzes#Family

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Isaac Komnenos Vatatzes was the youngest son of Alexios Vatatzes, a son of the general Theodore Vatatzes and the purple-born princess Eudokia Komnene

• https://en.wikipedia.org/wiki/Isaac_Komnenos_Vatatzes

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PLZ source for (c.1133-after1185)