'rightful pride' is correct and usable in written English.
You can use it to express a sense of justified pride or satisfaction in something. For example, "I have a rightful pride in my accomplishments."
That would be too simple, not layered enough with self-consciousness, rightful pride and lingering questions.
At one point, Bellos quotes with rightful pride a small instance of his own inventiveness.
"We've had a group dedicated to this project, with a lot of rightful pride," he said.
"But the Church of England takes considerable, and I think rightful, pride in being a presence in every community in the country.
The last essay in the collection finds Gordimer lamenting that "young black readers... confine themselves to reading African and African-American writers," and warning that "rightful pride in African literature should not create a literary ghetto".
He has the rightful pride of a person who has achieved much, and there will be pathos if he has to walk away in the sort of ignominy that enveloped him after last year's World Cup.
Arvind V. Mahankali is both a spelling champion and a rightful cause for pride among those who wish to preserve Yiddish as a source of joy and inventiveness, not a set of cookie-cutter rules.
No small part of their task was to convert a widely held objection to the proposed Constitution into a matter of rightful relief and pride.
Such party members include Fa Mulan, the woman who passes as a man in order to take her ailing father's place in the army; Jack Sparrow, a pirate who seeks to reclaim his ship, the Black Pearl; Simba, the self-exiled lion who is the rightful king of the Pride Land; and Tron, a security program in Hollow Bastion's computer network who seeks to end the dictatorship of the Master Control Program.
"Please stop tarnishing our noble religion … I implore you to come back to the rightful path and uphold the pride of Islam".
There Simba is visited by the ghost of Mufasa in the sky, who tells him he must take his rightful place as the king of the Pride Lands.
