The answer is: Jephthah

Judges 11:30-31, 39 - Jephthah made a vow that upon his victorious return he would give to the Lord, as a burnt offering, whatever came out of his house to meet him first. Unfortunately it was his daughter and he was bound by his vow. There is some disagreement among the scholars as to whether he actually sacrificed his daughter or whether she was given to temple service and perhaps something you would like to do some further study on.