Klaus Lennartti Hagelstam 12 Dec 1867 Vesterkulla, near Helsinki - 10 Apr 1930 Helsinki Parents Jarl August Hagelstam Mila of Eteläkypärä Children ingenieur Valter Hagelstam Siblings Sanny Federley professor, Dr. Jaarli Hagelstam, Doctor of Medicine & Surgery Wentzel Hagelstam Anne Emelie Hagelstam