It would be easier for someone to help if you included any of the following you might know:
Location: Country > Province/Region/State > city, town of b, m, d.
Timeframe: Dates/approximate dates of b, m, d.
Names or any parents/spouses/siblings/children. Is this a married couple or are they siblings?
Click edit or comment to the right of your question to add any details that would help locate the correct ancestors.