For example , Queen Maria I already had children by her husband when she acceded , so he became King Peter III at the moment of his wife 's accession .
The queen 's child did not have to be born after her accession .
Queen Maria I already had children by her husband when she acceded , so he became King Peter III at the moment of his wife 's accession .
The queen 's child did not have to be born after her accession .