have you read the cave of treasures, there is a part where they delve into melchizadek and say whos son he is.
add the books of adam and eve to your list also. its a little complicatd but basically, noah took adams body on the ark then after commanded shem to bury it at the location of where jesus would be crucified, he takes melchizadek with him on the journey, this would be shems grandson basically. Crazy shit, might just be fiction but it ties up some lose ends.
this is the excerpt in question.
Cave of Treasures: After the death of Noah Shem did as his father commanded him. He went into the Ark by night, brought out the body of Adam from there, sealed the Ark with his father's seal, and no man perceived [what he had done]. He called Ham and Yaphet, and said to them: My brothers, my father commanded me to go up and travel over the earth, even to the sea [i.e. the Mediterranean]. I am to see what the rivers are like, and then return to you. Behold, my wife and the children of my house are with you [in your care], let your eyes be upon them. His brothers said to him: Take with you a company of men from the camp, for the land is a desert waste, is shorn of inhabitants, and there are wild beasts out there. Shem said to them: The malak of Yahwah will go up with me, and he will save me from every evil thing. His brothers said to him: Go in peace, and may Yahwah the Father of our Fathers be with you. Shem said to Malakh (the brother of Shalah [Salah], the son of [Cainan] and [grand]son of Arphaxad), the father of Melchisedek, and Yozadhak, his mother: Give me Melchisedek, that he may go up with me, and be a consolation for me on the road. Malakh and Yozadhak, his mother, said to Shem: Take [him] and go in peace. Shem gave commands to his brothers, and said to them: My brothers, my father made me swear that neither I, nor any of your descendants, should go into the Ark. He sealed the Ark with his seal, and said to them: Let no man go near it.
Cave of Treasures: Shem took the body of Adam, and Melchisedek, and went forth by night from among his people. Behold, the malak of Yahwah, who was going before them, appeared to them. Their journey was very speedy, because the malak of Yahwah strengthened them until they arrived at that place. When they arrived at Gaghulta [Golgotha], which is the center of the earth, the malak of Yahwah showed Shem the place. When Shem deposited the body of our father Adam upon that place, the four quarters [of the earth] separated themselves from each other, and the earth opened itself in the form of a cross. Shem and Melchisedek deposited the body of Adam there. As soon as they laid it in, the four quarters [of the earth] drew quickly together, enclosed the body of our father Adam, and the door of the created world was shut fast. That place was called: Karkaphta [Skull]; because the head of all the children of men was deposited there. It was called: Gaghulta; because it was round [like the head]; Resiphta [a trodden-down thing], because the head of the accursed serpent, that is to say, Satan, was crushed there, and; Gefifta [Gabbatha]; because all the nations were to be gathered together to it.
Cave of Treasures: Shem said to Melchisedek: You are the priest of the Most High Yahwah. Yahwah chose you alone to minister before Him in this place. You will sit [dwell] here continually, and will not depart from this place all the days of your life. You will not take a wife, you will not shave your head, and you will not pour out blood in this place. You will not offer up wild beasts, nor feathered fowl. You will offer up bread and wine always. You will not build a building in this place. Behold, the malak of Yahwah will come down to you, and visit you continually. Shem embraced and kissed Melchisedek, blessed him, and he returned to his brothers.