Jeremiah 41:7

Ishmael : son of Abraham and Hagar,father of Zebadiah, governor of Judah under Jehoshaphat,son of Azel of Benjamin,son of Jehohanan,a priest of the Pashur clan who put away his heathen wife,son of Nethaniah; a militia leader who assasinated Gedaliah

Nethaniah : father of Ishmael who killed Gedaliah; son of Elishama,son of Asaph the Levite; worship leader under Asaph & David,a Levite King Jehoshaphat sent to teach the law around Judah,son of Shelemiah; father of Jehudi in the days of Jehoiakim

Jeremiah 51:63

Euphrates : a large river which joins the Tigris river before flowing into the Persian Gulf,a river flowing from eastern Turkey to the Persian Gulf
(31° 46´, 35° 14´); (35° 5´, 40° 25´); (33° 14´, 33° 28´)

Jeremiah 21:4

Babylon : a country of Babylon in lower Mesopotamia
(32° 32´, 44° 25´); (32° 32´, 44° 25´); (32° 32´, 44° 25´); (30° 57´, 46° 6´)

Israel : a citizen of Israel.,a member of the nation of Israel

Zedekiah : son of Chenaanah; a false prophet in the kingdom of King Ahab,son of King Josiah; made king of Judah by Nebuchadnezzar,son of King Jehoiachin,a signer of the covenant to obey the law with Nehemiah,son of Maaseiah; a false prophet in the time of King Jehoiachin,son of Hananiah; a prince of Judah in the time of Jehoiakim