updated 02/18/2014 AT 7:30 AM ET
•originally published 02/18/2014 AT 7:45 AM ET
After the majestic night out (think jewels) and the workaday (think children and art therapy), Princess Kate shifted gears Sunday and took on a surprise turn – as one of four godparents chosen for the son of a university friend in Maldon, Essex, east of London.
“She was here as a godmother, not as a princess,” local clergyman Rev. Ken Dunstan, of St. Barnabas Church in Mayland, tells PEOPLE.
“She did what I asked her to do, which was to make the promises that all godparents make.”
George was one of a few babies in the 50-strong congregation. There were nine children under 16 including three babies, Dunstan reveals.
“There was a little squeak early on from one of them but after that it was all fine. He behaved himself.”
The reverend also adds that Kate was looking “smart.”