Here's why:
* Concerned tone: The speaker's questions are filled with concern and worry. They inquire about Lord Randall's health and the details of his journey, hinting at a deep connection.
* Personal questions: The speaker asks about specific details like Lord Randall's dinner and who gave it to him, indicating a personal relationship.
* Inquisitive nature: The questions are increasingly focused and specific, suggesting the speaker is trying to understand what happened on Lord Randall's trip.
While the speaker's identity is never confirmed, the poem's tone and structure strongly suggest it is someone close to Lord Randall, perhaps his mother or a beloved.