Mūrdhajāta, Māndhātr, i. e. 頂生王 born from his mother's head, a reputed previous incarnation of the Buddha, who still ambitious, despite his universal earthly sway, his thousand sons, etc., few to Indra's heaven, saw the 天上玉女 celestial devī, but on the desire arising to rule there on Indra's death, he was hurled to earth; v. 文陀竭王經.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

（人名）Mu%r!dhagata，金輪王名。初由母之頂上而生，故稱曰頂生王，是釋迦如來之前身也。既為金輪王，有千子七寶，領四天下，亦不知飽，一日飛到忉利天見天上玉女，生彼天王若死我欲代治天上之意，生此意時，失通墮地，因頓著床，是勸人少欲知足也。見文陀竭王經。

丁福保《佛學大辭典》