On Wednesday night, hours before the official confirmation that US President Joe Biden will travel to Ireland, north and south, for five days next month, a family gathering took place in the most Irish of cities, Boston. It was a useful opportunity to observe the dynamics of the top tier of the diaspora – blood relatives, in-laws, connections, neighbours, new-found friends, and curious strangers. The occasion was the Boston College Peace Dinner, located on the 36th floor of the 100-storey Federal Street skyscraper in Boston. The room was packed with a mixture of powerful public figures of Irish America and…