Final answer:
The provided passages do not include a reference to Mattson's mother advising him about marriage; therefore, it is impossible to accurately answer the question about 'His Mother's Portrait' without the specific text.
Step-by-step explanation:
The passages provided do not contain the specific reference to Mattson's mother giving advice on marriage or the number of times this advice was given before he actually did marry. These excerpts are from different texts, including Henrik Ibsen's play A Doll's House, and there is also a mention of other stories. But none of these passages mention Mattson or his mother's advice about marriage.
Without the actual text or story titled "His Mother's Portrait," it's impossible to accurately answer the student's question about Mattson's mother and her advice on marriage. However, the excerpts given do explore themes of marriage, deceit, familial obligations, and societal norms, as depicted in the various dramatic and narrative literature pieces.