I hope my question will not be considered too broad. I am writing young adult fiction taking place during the Exodus (from just before the 10th plague until just after the giving of the second set of tablets). To do this, I have to fill in the spaces, mainly adding in women that Torah/etc does not mention (but that are of course present), as well as children. I will make up names/etc as needed but I want a story true to Jewish sources. I follow what’s in Torah first, then other parts of the Bible, then I consider (but don’t always use) various commentaries, Midrash, and so forth.
Looking at our core family, timed to the beginning of the Exodus…
Jochebed is present (and quite elderly) but her husband Amram has passed (some commentaries say he’s alive but I think it could go either way).
Moses: We know he has two sons by his wife Zipporah, Gershom and Eliezer (the 3 of them will not join the story until (just before?) Mt. Sinai). I assume they are small children because they fit with their mother on a single donkey. They also do not have tasks in those first couple of years. We know they later grow up, marry, and have at least one child each. I’m going to put them at about ages 2 and 6. I’m assuming there are no daughters because, though daughters generally get left out of the narrative, it would be really odd if they weren’t mentioned on the initial trip from Midian or when Zipporah’s father came to meet Moses. (Although my story ends before it is relevant, I am going with the view that Zipporah is the Cushite woman and Moses only married once.)
Miriam: Tanach does not mention a spouse or children but traditionally Caleb is said to be her husband (and we know his ancestors and descendants). This makes Hur Miriam’s son. Again, no mention of daughters and I’m going to just give her the one child. Hur has 4 sons, Uri, Shobal, Salma, Hareph, and an unknown number of daughters. Hareph has a son Beth-gader and Shobal has a son Kirjathjearim. Then Uri has a son Bezalel, who is the master craftsman for the building projects of the second year. There is commentary that says Bezalel is an extremely gifted child when given the task, so I’m going to make him 12 at the start. I will add in daughters for Hur and his children, as well as spouses for all adults with children. Bezalel will have multiple child cousins.
Aaron: We know Aaron has 4 sons, Nadab, Abihu, Eleazar, and Ithamar. Initially, only the two older sons are in training to become priests but the younger two take over after their brothers' deaths. Torah is clear that Nadab and Abihu had no children, which to me means they were young (say, 20 and 22) and not yet married. Their younger brothers must be teens. Torah states, more than once at the end of the 40 years in the wilderness, that only men who were under the age of 20 during the first census will be allowed to enter Canaan, with the exception of Caleb and Joshua. Eleazer (then high priest) is there though, which means he must have been under 20 during the first census and under 19 at the start of Exodus. Ithamar would be even younger. I will probably make them 11 and 14, or something around there. So their wives and children happen long after my story ends.
Aaron also has daughters (thank you Mi Yodeya for laying this out in an older question), but we don’t know their names, how many, or their ages relative to their brothers. I have created 3 daughters, two older than the boys, married with kids, and one born in the middle of the boys and newly married with maybe one child. I used names of (lesser known) Jewish women in Tanach but not from the Exodus. Two husbands I made up but one daughter I have married to Zithri, her father’s first cousin (birth orders in the genealogy make it likely that they’d be the same age). These 3 daughters will have children ages 0 to maybe 7 or 8 years.
So my question is: Have I missed anything in outlining the descendants of the three children of Jochebed and Amram? Are there any names (or other information) for children or spouses beyond what I have? Are any of my assumptions impossible? Thanks!