"The mother of my Lord", Luke 1:43. "The Lord" is the name for God throughout the Greek scripture. I noted that before in this thread.
Luke1:43 And whence is this to me, that the mother of my Lord [kurios] should come to me?
http://biblesuite.com/strongs/greek/2962.htm
Transliteration: kurios
Phonetic Spelling: (koo'-ree-os)
Short Definition: lord, Lord, master, sir
Matthew 25:18 But he that had received one went and digged in the earth, and hid his lord's [kurios] money.
Luke 12:47 And that servant, which knew his lord's [kurios] will, and prepared not himself, neither did according to his will, shall be beaten with many stripes.
Luke 16:5 So he called every one of his lord's [kurios] debtors unto him, and said unto the first, How much owest thou unto my lord?
It is also the name of Jesus as well as the Holy Spirit...