Did James Joyce have any Grandchildren?

James Joyce was the eldest of 10 surviving children; he had 3 brothers (John Stanislaus - born 1884; Charles Patrick - 1886; George Alfred - 1887) and 6 sisters (Margaret Alice "Poppie" - 1884; Eileen Isabel Mary Xavier Bridget - 1889; Mary Kathleen - 1890; Eva May - 1891; Florence Elizabeth - 1892; Mabel Josephine Anne "Baby" - 1893).