This ruler failed to marry his first daughter, Irene, to Valdemar Christian of Denmark because Valdemar didn't convert to Orthodoxy. This ruler's mother changed her name from Xenia to Martha while living in hiding as a nun, and his father was returned by the Truce of Deulino. This ruler's diplomats ceded Ingria in the Treaty of Stolbovo and stopped the incursions of Sigismund III. This son of the patriarch Filaret was hiding in the Hypatia Monastery when the zemsky sobor announced his election. Ivan Susanin's protection of this tsar was memorialized by Mikhail Glinka. For 10 points, name this 
This ruler failed to marry his first daughter, Irene, to Valdemar Christian of Denmark because Valdemar didn't convert to Orthodoxy. This ruler's mother changed her name from Xenia to Martha while living in hiding as a nun, and his father was returned by the Truce of Deulino. This ruler's diplomats ceded Ingria in the Treaty of Stolbovo and stopped the incursions of Sigismund III. This son of the patriarch Filaret was hiding in the Hypatia Monastery when the zemsky sobor announced his election. Ivan Susanin's protection of this tsar was memorialized by Mikhail Glinka. For 10 points, name this ruler whose accession ended the Time of Troubles, the first Romanov tsar.
This ruler failed to marry his first daughter, Irene, to Valdemar Christian of Denmark because Valdemar didn't convert to Orthodoxy.
Michael Romanov [or Michael I; or Mikhail Fyodorovich Romanov; prompt on "Michael" or "Mikhail" until "Romanov" is read and accept either after that]