MILAN — Count Umberto Marzotto, heir of the Marzotto textile family, died Friday at age 92, in Lugano, Switzerland. The cause of death was a degenerative illness. Funerals will be held on Jan. 3 in the Duomo of Valdagno, the Italian town in the Veneto region where the Marzotto company is headquartered. The son of Gaetano Marzotto Jr., the entrepreneur and philanthropist who built the family-owned company into an international and giant textile and fashion powerhouse in the 1900s, Umberto Marzotto is survived by his second wife, Gemma Gerolimetto, and his four children Matteo, Paola, Vittorio Emanuele and Diamante. Their sister Annalisa, who had cystic fibrosis, died in 1989. This is the latest death in the Marzotto family, following that of Umberto’s brother Pietro, a former chairman and chief executive officer of the group, last April, and of his first wife Marta, in 2016. His brother Giannino, a former Marzotto chairman, died in 2012. Umberto Marzotto was a longtime former president