Alphaios identifies the father named in the descriptions of James and Levi.

Alphaios is used as a genitive masculine personal name identifying a father: James is named as his son in four list passages, and Levi is named as his son in the call narrative.

1. Father identified in son-designations · dominant

   The genitive singular masculine form marks a paternal identification. In Luke 6:15, Mark 3:18, Matthew 10:3, and Acts 1:13, the APB renders James as "son of Alphaeus" or "James of Alphaeus"; in Mark 2:14, it renders Levi as "the son of Alphaeus" in the account of his call from the tax booth.

   Acts 1:13Luke 6:15Mark 2:14Mark 3:18Matthew 10:3

In the Anselm Project Bible: Across the verses, the APB presents the name within paternal descriptions, usually as "son of Alphaeus" and once as "James of Alphaeus." These phrases reflect the clauses rather than isolating a separate English rendering for the name.