Hendrik Pels - Evert Pels "boy"

Does any one know the source for the name "Hendrick Vosberg Pels"?

Considering that Evert's "boy" has gotten an Indian girl pregnant by 1660 it seems that the "boy" must be older than his so-called brothers Evert Evertszen Pels b.c . 1648 and Simon (Symen) Pels b 1665

Evert Jnr. is only about 12 years old so Hendrick must be older than this.

Dutch naming convention means that the eldest son should be named for the paternal grandfather (Evert Jnr. - check) and the second son named for the maternal grandfather (Sijmon Everts - check). So who is this older "son" named for?

We know from the ships manifest that no children made the journey with Evert, only his wife and a servant ... BOY.

Has anyone considered that Hendrick Vosberg was Evert's indentured servant who ran away to live with the indians rather than a SON of Evert's that had been kidnapped? So the letters between Ensign Smit and Stuyvesant are not half hearted attempts to rescue a missing child of a prominent citizen but rather fatalistic acceptance that it is not worth a martial effort to reclaim a run away servant who has basically been adopted by the enemy.