гости еще спали, когда к нему явилс

гости еще спали, когда к нему явился посланец с письмом о его сестре.

Результаты (английский) 1:

Guests were still asleep when the messenger came to him with a letter of his sister.

Результаты (английский) 2:

guests still asleep when it was a Messenger with a letter about his sister.

Результаты (английский) 3:

The guests were asleep, when it was a messenger with a letter of his sister.