Plutarch, Theseus
Bernadotte Perrin, Ed.

But Theseus, desiring to be at work, and at the same time courting the favour of the people, went out against the Marathonian bull, which was doing no small mischief to the inhabitants of the Tetrapolis.¹ After he had mastered it, he made a display of driving it alive through the city, and then sacrificed it to the Delphinian Apollo. [2] Now the story of Hecale and her receiving and entertaining Theseus on this expedition seems not to be devoid of all truth. For the people of the townships round about used to assemble and sacrifice the Hecalesia to Zeus Hecalus, and they paid honors to Hecale, calling her by the diminutive name of Hecaline, because she too, when entertaining Theseus, in spite of the fact that he was quite a youth, caressed him as elderly people do, and called him affectionately by such diminutive names. [3] And since she vowed, when the hero was going to his battle with the bull, that she would sacrifice to Zeus if he came back safe, but died before his return, she obtained the above mentioned honors as a return for her hospitality at the command of Theseus, as Philochorus has written.