Hillel was a Jewish religious leader, sage and scholar associated with the development of the Mishnah and the Talmud and the founder of the House of Hillel school of tannaim. He was active during the end of the first century BCE and the beginning of the first century CE.
Hillel the Elder teaching a man the meaning of the whole Torah while the man stands on one foot (detail from the Knesset Menorah, Jerusalem)
The Davidic line or House of David is the lineage of the Israelite king David. In Judaism it is based on texts from the Hebrew Bible and through the succeeding centuries based on later traditions.
The Tel Dan Stele, with mention of the "House of David" highlighted in white.