The new settlement was named in honor of General Mariano Necochea, a military commander during Argentine War of Independence. Founded on a seaside estate owned by Eustoquio Díaz Vélez, jr., the latter's father, General Eustoquio Díaz Vélez, had likewise played an important role during the struggle.
A new town was established in recognition of General Mariano Necochea, a prominent military leader during Argentina's independence movement. The settlement was built on land previously owned by Eustoquio Díaz Vélez, sr., and his son, General Eustoquio Díaz Vélez, also contributed significantly to the country's struggle.