A "dutiful son" refers to a person who faithfully carries out their responsibilities and takes care of their obligations towards their parents. Full definition
From dutiful son to responsible businessman, Matt is driven by a desire to bring like - minded singles together in a safe space. (datingadvice.com)
Set in the title Indiana city that's essentially an outdoor modern architecture museum, this intellect - tickling meeting of minds between Haley Lu Richardson's yearning townie Casey and John Cho's resentfully dutiful son Jin is undoubtedly the best, 99 percent platonic relationship we've seen onscreen in many a moon. (dailynews.com)
He seemed like the dutiful son come home to roost. (inc.com)