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.

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.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain