Still I think that the final syllable of servant may have been effaced.
"You, brother mine that entertain ambition."
This is the reading of the folio, and I see no need of reading with editors 'entertain'd.'
"That yet looks on me, or would know me."
With Collier's folio I read e'er for 'or.'
"How thou hast met us here, whom three hours since
Were wrack'd upon this shore."