What is "alfonseca"

Alfonseca is a Spanish surname. Notable people with the surname include:

• Antonio Alfonseca (b. 1972), Dominican baseball pitcher
• Juan Bautista Alfonseca (1810–1875), Dominican military officer and composer
• Manuel Alfonseca (b. 1946), Spanish writer and university professor
• Rosa María Alfonseca (b. 1953), Mexican graphic artist