Problem replacing city names in modding

[Hiram]

I recently made a mod which changes all the names of the civs' capital cities. The issue I'm having is that some of the names aren't being updated in the database for reasons i cannot fathom. It appears to be only happening with:

Attila's Court
Gao
Onondaga
Sukhothai

<Update>
<Where Tag="TXT_KEY_CITY_NAME_GAO"/>
<Set>
<Text>Wilsonio</Text>
</Set>
</Update>
<Update>
<Where Tag="TXT_KEY_CITY_NAME_SUKHOTHAI"/>
<Set>
<Text>Leeronahai</Text>
</Set>
</Update>
<Update>
<Where Tag="TXT_KEY_CITY_NAME_ONONDAGA"/>
<Set>
<Text>Noraakrala</Text>
</Set>
</Update>
<Update>
<Where Tag="TXT_KEY_CITY_NAME_ATTILASCOURT"/>
<Set>
<Text>Maxolor</Text>
</Set>
</Update>

I've checked the spellings in the tags and nothing appears to be wrong there. Any solutions?