He was born as the eldest son of the Regent family Motofusa MATSUDONO but when his brother Moroie MATSUDONO was born, Moroie became the heir because his maternal grandfather had been Daijodaijin (Grand minister of state) and hence of better birth, and Takatada was called 'Rakuin' (child born out of wedlock).
摂関家である松殿基房の長男に生まれたが、弟の松殿師家が生まれると、母方の祖父が太政大臣を務めた師家の方が家柄が格上と言う事で嫡男とされてしまい、隆忠は「落胤」（当時においては庶子の意味）と呼ばれていた。