Junia

Junia (or Junias) is greeted by Paul in Romans 16:7 as being 'well known among the apostles' and as having been in Christ before Paul himself—thus among the earliest believers. She and Andronicus, likely her husband or relative, are described as Paul's fellow countrymen who had shared his imprisonment. The question of whether Junia was female (as most ancient interpreters believed) and whether she was herself an apostle has been extensively debated in modern scholarship. If female, she would be the only woman explicitly called an apostle in the New Testament.