Genesis 25:1
And Abraham took another wife named Keturah.
Genesis 23:1-2
Now the years of Sarah's life were a hundred and twenty-seven.
Genesis 28:1
Then Isaac sent for Jacob, and blessing him, said, Do not take a wife from among the women of Canaan;
1 Chronicles 1:32-33
And the sons of Keturah, Abraham's servant-wife: she was the mother of Zimran and Jokshan and Medan and Midian and Ishbak and Shuah. And the sons of Jokshan: Sheba and Dedan.
Treasury of Scripture Knowledge
Summary
                            Then again Abraham took a wife, and her name was Keturah.                        
                    General references
Bible References
General references
                                        Genesis 23:1                                        
                                                                                                                                Now the years of Sarah's life were a hundred and twenty-seven.
                                    
                                        Genesis 28:1                                        
                                                                                                                                Then Isaac sent for Jacob, and blessing him, said, Do not take a wife from among the women of Canaan;
                                    
                                        1 Chronicles 1:32                                        
                                                            
                        And the sons of Keturah, Abraham's servant-wife: she was the mother of Zimran and Jokshan and Medan and Midian and Ishbak and Shuah. And the sons of Jokshan: Sheba and Dedan.