Rubuta ci gaba don wannan sakin layi - Ba da daɗewa ba dangin Ortiz de Rozas, ɗaya daga cikin manyan masu mallakar ƙasar Argentina, suka sayi yankin da ke bakin teku. An sayar wa wata sananniyar iyali, Leloirs, a shekara ta 1816, yankin ya zama gonar tumaki. Wani zuriyar Ortiz de Rozas, Janar Juan Manuel de Rosas, ya sanya yankin ya zama gundumar lardin Buenos Aires a 1825, yanki na farko da aka ba shi tun lokacin da aka sami 'yancin kai a 1816; a matsayin gwamna, Rosas ya murkushe tashin hankali na gida a 1839 akan mulkinsa na zalunci. Bayan juyin mulkin Rosas na 1852
, an ba da yankin wurin zama na gundumar (Mar del Tuyú) a cikin 1864 kuma, tare da isowar wuraren yanka, gwamnati ta sami tashoshin masunta, tashar ruwa tsakanin San Clemente da Buenos Aires, wani layin dogo da hasumiyoyi biyu da aka gina tsakanin 1878 da 1902.