Calum Maclean
Maclean was born in Òsgaig, Isle of Raasay, Scotland, into a family of five boys and two girls. His father was Malcolm MacLean (1880–1951), who was a tailor. His mother, Kirsty (1886–1974), was the daughter of Sorley Mor Nicolson of Braes, Skye, and his wife, Ishabel.
Sean Mackey
Sean Mackey was born in Dolla, County Tipperary, Ireland in 1917. Having attended Mount Saint Joseph College in Roscrea, he entered University College Dublin where he obtained a BE Civil Engineering degree and BSc degree. He subsequently went on to get a Master's degree in UCD before marrying Elizabeth Ann (Lilian) Mulleaney and emigrating to England where he secured a job with leading construction steelmaker Dorman Long.