It seems you have not framed the question properly
As only R is the legatee named in the Will, his wife who is not a named legatee nor a legal heir of the deceased, her name cannot be included in the LA grant
This appears to be an inadvertent error
You will have to file an application for rectification. Show the Will of the deceased and the LA petition to the Court
Point out that in the Will the name of R's wife is not mentioned and she was not a co applicant of the LA petition and request the Court to issue an amended or rectified grant
Other heirs are not required to be cited
There is a problem in your question as it's not framed properly
It appears that since R is of advanced age (but in good health condition) he made his wife a co applicant
However the wife of R is neither a legatee nor a legal heir
So the LA grant could not have been issued jointly to R and his wife
Wife of R has no caveatable interest in the estate of the deceased
Though R is of an advanced age but he is fit and fine. So it's not that he cannot administer and manage the estate. So there was no need to make his wife a co applicant
If that be the case then the petition will have to be amended
Consents of other heirs will have to be obtained again since they had consented for R and his wife to administer the estate jointly
They may not so consent if R is the sole applicant/administrator
So their consents in favour of R singly will have to be obtained again
So the entire procedure will have to be repeated and the Court has to issue a rectified LA grant